/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:09:49,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:09:49,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:09:49,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:09:49,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:09:49,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:09:49,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:09:49,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:09:49,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:09:49,968 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:09:49,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:09:49,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:09:49,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:09:49,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:09:49,971 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:09:49,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:09:49,971 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:09:49,972 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:09:49,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:09:49,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:09:49,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:09:49,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:09:49,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:09:49,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:09:49,973 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:09:49,973 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:09:49,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:09:49,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:09:49,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:09:49,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:09:49,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:09:49,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:09:49,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:09:49,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:09:49,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:09:49,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:09:49,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:09:49,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:09:49,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:09:49,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:09:49,976 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:09:49,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:09:49,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:09:49,976 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:09:50,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:09:50,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:09:50,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:09:50,145 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:09:50,145 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:09:50,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2023-12-15 18:09:51,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:09:51,305 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:09:51,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2023-12-15 18:09:51,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a25add0/6cf353b223a74bda88d2cf6b8e66c037/FLAG9f75aaef7 [2023-12-15 18:09:51,330 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21a25add0/6cf353b223a74bda88d2cf6b8e66c037 [2023-12-15 18:09:51,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:09:51,334 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:09:51,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:09:51,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:09:51,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:09:51,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e08111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51, skipping insertion in model container [2023-12-15 18:09:51,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:09:51,490 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.15.cil.c[911,924] [2023-12-15 18:09:51,553 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.15.cil.c[8416,8429] [2023-12-15 18:09:51,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:09:51,631 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:09:51,638 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.15.cil.c[911,924] [2023-12-15 18:09:51,650 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.15.cil.c[8416,8429] [2023-12-15 18:09:51,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:09:51,704 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:09:51,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51 WrapperNode [2023-12-15 18:09:51,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:09:51,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:09:51,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:09:51,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:09:51,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,779 INFO L138 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1170 [2023-12-15 18:09:51,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:09:51,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:09:51,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:09:51,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:09:51,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,821 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:09:51,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:09:51,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:09:51,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:09:51,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:09:51,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (1/1) ... [2023-12-15 18:09:51,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:09:51,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:09:51,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:09:51,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:09:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:09:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:09:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:09:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-15 18:09:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-15 18:09:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:09:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:09:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:09:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:09:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-15 18:09:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-15 18:09:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:09:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:09:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:09:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:09:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-15 18:09:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-15 18:09:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-15 18:09:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-15 18:09:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-15 18:09:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-15 18:09:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:09:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:09:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:09:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:09:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:09:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-15 18:09:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-15 18:09:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:09:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:09:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:09:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:09:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-15 18:09:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-15 18:09:52,114 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:09:52,115 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:09:52,706 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-15 18:09:52,707 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; [2023-12-15 18:09:52,769 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:09:52,853 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:09:52,853 INFO L309 CfgBuilder]: Removed 20 assume(true) statements. [2023-12-15 18:09:52,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:09:52 BoogieIcfgContainer [2023-12-15 18:09:52,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:09:52,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:09:52,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:09:52,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:09:52,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:09:51" (1/3) ... [2023-12-15 18:09:52,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46201488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:09:52, skipping insertion in model container [2023-12-15 18:09:52,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:09:51" (2/3) ... [2023-12-15 18:09:52,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46201488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:09:52, skipping insertion in model container [2023-12-15 18:09:52,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:09:52" (3/3) ... [2023-12-15 18:09:52,862 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.15.cil.c [2023-12-15 18:09:52,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:09:52,875 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:09:52,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:09:52,931 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;@6c10a3ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:09:52,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:09:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 481 states, 418 states have (on average 1.7200956937799043) internal successors, (719), 426 states have internal predecessors, (719), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-15 18:09:52,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 18:09:52,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:09:52,948 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] [2023-12-15 18:09:52,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:09:52,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:09:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash -496887913, now seen corresponding path program 1 times [2023-12-15 18:09:52,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:09:52,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357176310] [2023-12-15 18:09:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:09:52,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:09:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:09:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:09:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:53,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:09:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:53,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:09:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:53,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:09:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:09:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:09:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:09:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:09:53,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357176310] [2023-12-15 18:09:53,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357176310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:09:53,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:09:53,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:09:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257351851] [2023-12-15 18:09:53,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:09:53,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:09:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:09:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:09:53,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:09:53,471 INFO L87 Difference]: Start difference. First operand has 481 states, 418 states have (on average 1.7200956937799043) internal successors, (719), 426 states have internal predecessors, (719), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) 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) [2023-12-15 18:09:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:09:54,684 INFO L93 Difference]: Finished difference Result 1073 states and 1793 transitions. [2023-12-15 18:09:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:09:54,687 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 [2023-12-15 18:09:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:09:54,705 INFO L225 Difference]: With dead ends: 1073 [2023-12-15 18:09:54,705 INFO L226 Difference]: Without dead ends: 613 [2023-12-15 18:09:54,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:09:54,715 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1271 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:09:54,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1957 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:09:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-15 18:09:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 576. [2023-12-15 18:09:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 494 states have (on average 1.5951417004048583) internal successors, (788), 501 states have internal predecessors, (788), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2023-12-15 18:09:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 905 transitions. [2023-12-15 18:09:54,778 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 905 transitions. Word has length 57 [2023-12-15 18:09:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:09:54,778 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 905 transitions. [2023-12-15 18:09:54,778 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) [2023-12-15 18:09:54,778 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 905 transitions. [2023-12-15 18:09:54,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 18:09:54,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:09:54,780 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] [2023-12-15 18:09:54,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:09:54,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:09:54,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:09:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1854086615, now seen corresponding path program 1 times [2023-12-15 18:09:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:09:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628644235] [2023-12-15 18:09:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:09:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:09:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:09:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:09:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:09:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:54,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:09:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:09:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:09:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:54,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:09:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:09:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:09:54,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628644235] [2023-12-15 18:09:54,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628644235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:09:54,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:09:54,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:09:54,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225755030] [2023-12-15 18:09:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:09:54,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:09:54,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:09:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:09:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:09:54,880 INFO L87 Difference]: Start difference. First operand 576 states and 905 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) [2023-12-15 18:09:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:09:56,406 INFO L93 Difference]: Finished difference Result 1511 states and 2267 transitions. [2023-12-15 18:09:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 18:09:56,406 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 [2023-12-15 18:09:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:09:56,416 INFO L225 Difference]: With dead ends: 1511 [2023-12-15 18:09:56,417 INFO L226 Difference]: Without dead ends: 1311 [2023-12-15 18:09:56,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 18:09:56,419 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 3843 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3863 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:09:56,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3863 Valid, 2521 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:09:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2023-12-15 18:09:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1192. [2023-12-15 18:09:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 980 states have (on average 1.5) internal successors, (1470), 995 states have internal predecessors, (1470), 129 states have call successors, (129), 75 states have call predecessors, (129), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2023-12-15 18:09:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1738 transitions. [2023-12-15 18:09:56,507 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1738 transitions. Word has length 57 [2023-12-15 18:09:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:09:56,507 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1738 transitions. [2023-12-15 18:09:56,507 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) [2023-12-15 18:09:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1738 transitions. [2023-12-15 18:09:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:09:56,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:09:56,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:09:56,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:09:56,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:09:56,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:09:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1330642772, now seen corresponding path program 1 times [2023-12-15 18:09:56,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:09:56,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114900739] [2023-12-15 18:09:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:09:56,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:09:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:09:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:09:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:56,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:09:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:56,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:09:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:09:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 18:09:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:09:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:09:56,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:09:56,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114900739] [2023-12-15 18:09:56,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114900739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:09:56,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:09:56,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:09:56,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800677289] [2023-12-15 18:09:56,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:09:56,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:09:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:09:56,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:09:56,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:09:56,618 INFO L87 Difference]: Start difference. First operand 1192 states and 1738 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:09:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:09:57,646 INFO L93 Difference]: Finished difference Result 2130 states and 3044 transitions. [2023-12-15 18:09:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:09:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-15 18:09:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:09:57,651 INFO L225 Difference]: With dead ends: 2130 [2023-12-15 18:09:57,651 INFO L226 Difference]: Without dead ends: 1320 [2023-12-15 18:09:57,653 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 [2023-12-15 18:09:57,654 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1003 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:09:57,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 2379 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:09:57,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-12-15 18:09:57,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1216. [2023-12-15 18:09:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 998 states have (on average 1.4879759519038076) internal successors, (1485), 1013 states have internal predecessors, (1485), 129 states have call successors, (129), 75 states have call predecessors, (129), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2023-12-15 18:09:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1759 transitions. [2023-12-15 18:09:57,698 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1759 transitions. Word has length 58 [2023-12-15 18:09:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:09:57,698 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1759 transitions. [2023-12-15 18:09:57,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:09:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1759 transitions. [2023-12-15 18:09:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:09:57,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:09:57,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:09:57,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:09:57,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:09:57,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:09:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1403029330, now seen corresponding path program 1 times [2023-12-15 18:09:57,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:09:57,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747774317] [2023-12-15 18:09:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:09:57,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:09:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:57,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:09:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:57,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:09:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:09:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:09:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:09:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 18:09:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:09:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:09:57,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:09:57,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747774317] [2023-12-15 18:09:57,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747774317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:09:57,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:09:57,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:09:57,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304650677] [2023-12-15 18:09:57,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:09:57,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:09:57,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:09:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:09:57,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:09:57,791 INFO L87 Difference]: Start difference. First operand 1216 states and 1759 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:09:59,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:09:59,254 INFO L93 Difference]: Finished difference Result 3348 states and 4740 transitions. [2023-12-15 18:09:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 18:09:59,254 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-15 18:09:59,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:09:59,260 INFO L225 Difference]: With dead ends: 3348 [2023-12-15 18:09:59,260 INFO L226 Difference]: Without dead ends: 1446 [2023-12-15 18:09:59,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 18:09:59,269 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 3923 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3943 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:09:59,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3943 Valid, 2558 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:09:59,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-12-15 18:09:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1309. [2023-12-15 18:09:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1056 states have (on average 1.4460227272727273) internal successors, (1527), 1071 states have internal predecessors, (1527), 149 states have call successors, (149), 89 states have call predecessors, (149), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2023-12-15 18:09:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1842 transitions. [2023-12-15 18:09:59,354 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1842 transitions. Word has length 58 [2023-12-15 18:09:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:09:59,355 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1842 transitions. [2023-12-15 18:09:59,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:09:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1842 transitions. [2023-12-15 18:09:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 18:09:59,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:09:59,357 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] [2023-12-15 18:09:59,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:09:59,357 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:09:59,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:09:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1829513589, now seen corresponding path program 1 times [2023-12-15 18:09:59,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:09:59,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50995423] [2023-12-15 18:09:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:09:59,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:09:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:09:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:09:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:09:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:09:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:09:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:09:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:09:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:09:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:09:59,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:09:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50995423] [2023-12-15 18:09:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50995423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:09:59,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:09:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:09:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908304202] [2023-12-15 18:09:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:09:59,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:09:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:09:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:09:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:09:59,489 INFO L87 Difference]: Start difference. First operand 1309 states and 1842 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) [2023-12-15 18:10:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:00,719 INFO L93 Difference]: Finished difference Result 2395 states and 3302 transitions. [2023-12-15 18:10:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:10:00,720 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 [2023-12-15 18:10:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:00,725 INFO L225 Difference]: With dead ends: 2395 [2023-12-15 18:10:00,725 INFO L226 Difference]: Without dead ends: 1468 [2023-12-15 18:10:00,729 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 [2023-12-15 18:10:00,729 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 993 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:00,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 2348 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:10:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2023-12-15 18:10:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1341. [2023-12-15 18:10:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1080 states have (on average 1.4333333333333333) internal successors, (1548), 1095 states have internal predecessors, (1548), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2023-12-15 18:10:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1871 transitions. [2023-12-15 18:10:00,773 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1871 transitions. Word has length 80 [2023-12-15 18:10:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:00,773 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 1871 transitions. [2023-12-15 18:10:00,773 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) [2023-12-15 18:10:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1871 transitions. [2023-12-15 18:10:00,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 18:10:00,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:00,774 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] [2023-12-15 18:10:00,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:10:00,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:00,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash 98759113, now seen corresponding path program 1 times [2023-12-15 18:10:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:00,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651322514] [2023-12-15 18:10:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:10:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:10:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:10:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:10:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:10:00,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:00,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651322514] [2023-12-15 18:10:00,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651322514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:00,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:00,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:10:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417078987] [2023-12-15 18:10:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:00,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:10:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:10:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:10:00,944 INFO L87 Difference]: Start difference. First operand 1341 states and 1871 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) [2023-12-15 18:10:02,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:02,135 INFO L93 Difference]: Finished difference Result 3215 states and 4312 transitions. [2023-12-15 18:10:02,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:10:02,135 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 [2023-12-15 18:10:02,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:02,143 INFO L225 Difference]: With dead ends: 3215 [2023-12-15 18:10:02,143 INFO L226 Difference]: Without dead ends: 2257 [2023-12-15 18:10:02,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-15 18:10:02,146 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1480 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:02,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 2018 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:10:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2023-12-15 18:10:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 1963. [2023-12-15 18:10:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1554 states have (on average 1.388030888030888) internal successors, (2157), 1582 states have internal predecessors, (2157), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2023-12-15 18:10:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2669 transitions. [2023-12-15 18:10:02,256 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2669 transitions. Word has length 80 [2023-12-15 18:10:02,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:02,257 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 2669 transitions. [2023-12-15 18:10:02,258 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) [2023-12-15 18:10:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2669 transitions. [2023-12-15 18:10:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 18:10:02,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:02,259 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] [2023-12-15 18:10:02,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:10:02,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:02,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:02,259 INFO L85 PathProgramCache]: Analyzing trace with hash 522405835, now seen corresponding path program 1 times [2023-12-15 18:10:02,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:02,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953203722] [2023-12-15 18:10:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:02,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:10:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:10:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:10:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:10:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:10:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953203722] [2023-12-15 18:10:02,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953203722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:02,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:02,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584824670] [2023-12-15 18:10:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:02,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:02,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:02,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:02,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:02,341 INFO L87 Difference]: Start difference. First operand 1963 states and 2669 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) [2023-12-15 18:10:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:03,162 INFO L93 Difference]: Finished difference Result 5336 states and 7165 transitions. [2023-12-15 18:10:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:10:03,162 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 [2023-12-15 18:10:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:03,175 INFO L225 Difference]: With dead ends: 5336 [2023-12-15 18:10:03,175 INFO L226 Difference]: Without dead ends: 3758 [2023-12-15 18:10:03,179 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 [2023-12-15 18:10:03,179 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1768 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:03,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 1318 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:10:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2023-12-15 18:10:03,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3542. [2023-12-15 18:10:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 2752 states have (on average 1.3372093023255813) internal successors, (3680), 2816 states have internal predecessors, (3680), 418 states have call successors, (418), 276 states have call predecessors, (418), 370 states have return successors, (627), 454 states have call predecessors, (627), 414 states have call successors, (627) [2023-12-15 18:10:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4725 transitions. [2023-12-15 18:10:03,350 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4725 transitions. Word has length 80 [2023-12-15 18:10:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:03,351 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 4725 transitions. [2023-12-15 18:10:03,351 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) [2023-12-15 18:10:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4725 transitions. [2023-12-15 18:10:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 18:10:03,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:03,356 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] [2023-12-15 18:10:03,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:10:03,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:03,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash 599306633, now seen corresponding path program 1 times [2023-12-15 18:10:03,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:03,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84502459] [2023-12-15 18:10:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:03,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:10:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:10:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:10:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:10:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:10:03,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:03,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84502459] [2023-12-15 18:10:03,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84502459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:03,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:03,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:10:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519791547] [2023-12-15 18:10:03,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:03,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:10:03,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:03,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:10:03,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:10:03,410 INFO L87 Difference]: Start difference. First operand 3542 states and 4725 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) [2023-12-15 18:10:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:04,107 INFO L93 Difference]: Finished difference Result 5236 states and 6884 transitions. [2023-12-15 18:10:04,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 18:10:04,107 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 [2023-12-15 18:10:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:04,114 INFO L225 Difference]: With dead ends: 5236 [2023-12-15 18:10:04,114 INFO L226 Difference]: Without dead ends: 2079 [2023-12-15 18:10:04,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:10:04,119 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1100 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:04,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1246 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:10:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2023-12-15 18:10:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1963. [2023-12-15 18:10:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1554 states have (on average 1.3603603603603605) internal successors, (2114), 1582 states have internal predecessors, (2114), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2023-12-15 18:10:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2626 transitions. [2023-12-15 18:10:04,211 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2626 transitions. Word has length 80 [2023-12-15 18:10:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:04,211 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 2626 transitions. [2023-12-15 18:10:04,211 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) [2023-12-15 18:10:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2626 transitions. [2023-12-15 18:10:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:10:04,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:04,212 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] [2023-12-15 18:10:04,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:10:04,213 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:04,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash 568230019, now seen corresponding path program 1 times [2023-12-15 18:10:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:04,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508836288] [2023-12-15 18:10:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:10:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:10:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:10:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 18:10:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:10:04,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:04,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508836288] [2023-12-15 18:10:04,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508836288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:04,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:04,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:10:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575641117] [2023-12-15 18:10:04,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:04,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:10:04,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:10:04,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:10:04,311 INFO L87 Difference]: Start difference. First operand 1963 states and 2626 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) [2023-12-15 18:10:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:05,698 INFO L93 Difference]: Finished difference Result 4564 states and 6003 transitions. [2023-12-15 18:10:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 18:10:05,699 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 [2023-12-15 18:10:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:05,707 INFO L225 Difference]: With dead ends: 4564 [2023-12-15 18:10:05,707 INFO L226 Difference]: Without dead ends: 2699 [2023-12-15 18:10:05,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-12-15 18:10:05,710 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 2505 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:05,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2549 Valid, 2056 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:10:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2023-12-15 18:10:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2535. [2023-12-15 18:10:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 1970 states have (on average 1.3172588832487309) internal successors, (2595), 2006 states have internal predecessors, (2595), 303 states have call successors, (303), 190 states have call predecessors, (303), 260 states have return successors, (420), 341 states have call predecessors, (420), 299 states have call successors, (420) [2023-12-15 18:10:05,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3318 transitions. [2023-12-15 18:10:05,803 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3318 transitions. Word has length 81 [2023-12-15 18:10:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:05,803 INFO L495 AbstractCegarLoop]: Abstraction has 2535 states and 3318 transitions. [2023-12-15 18:10:05,803 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) [2023-12-15 18:10:05,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3318 transitions. [2023-12-15 18:10:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-15 18:10:05,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:05,805 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] [2023-12-15 18:10:05,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:10:05,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:05,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:05,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1314556026, now seen corresponding path program 1 times [2023-12-15 18:10:05,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:05,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429389726] [2023-12-15 18:10:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:05,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:10:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:10:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:10:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 18:10:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:10:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 18:10:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 18:10:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:10:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-15 18:10:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-15 18:10:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-15 18:10:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-15 18:10:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-15 18:10:05,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429389726] [2023-12-15 18:10:05,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429389726] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:10:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458400249] [2023-12-15 18:10:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:05,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:10:05,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:10:05,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:10:05,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:10:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:10:06,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:10:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-15 18:10:06,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:10:06,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458400249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:06,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:10:06,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-15 18:10:06,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452955811] [2023-12-15 18:10:06,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:06,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:06,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:10:06,191 INFO L87 Difference]: Start difference. First operand 2535 states and 3318 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) [2023-12-15 18:10:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:06,392 INFO L93 Difference]: Finished difference Result 6502 states and 8275 transitions. [2023-12-15 18:10:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:06,393 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 [2023-12-15 18:10:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:06,405 INFO L225 Difference]: With dead ends: 6502 [2023-12-15 18:10:06,405 INFO L226 Difference]: Without dead ends: 4494 [2023-12-15 18:10:06,409 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 [2023-12-15 18:10:06,410 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 57 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:06,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1365 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:10:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2023-12-15 18:10:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 4451. [2023-12-15 18:10:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 3419 states have (on average 1.2772740567417373) internal successors, (4367), 3484 states have internal predecessors, (4367), 537 states have call successors, (537), 372 states have call predecessors, (537), 493 states have return successors, (727), 597 states have call predecessors, (727), 533 states have call successors, (727) [2023-12-15 18:10:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 5631 transitions. [2023-12-15 18:10:06,630 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 5631 transitions. Word has length 145 [2023-12-15 18:10:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:06,631 INFO L495 AbstractCegarLoop]: Abstraction has 4451 states and 5631 transitions. [2023-12-15 18:10:06,631 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) [2023-12-15 18:10:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 5631 transitions. [2023-12-15 18:10:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-15 18:10:06,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:06,633 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:06,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:10:06,844 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,SelfDestructingSolverStorable9 [2023-12-15 18:10:06,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:06,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1366588858, now seen corresponding path program 1 times [2023-12-15 18:10:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:06,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408607334] [2023-12-15 18:10:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:06,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:10:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:10:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:10:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 18:10:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:10:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 18:10:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 18:10:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:10:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:10:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-15 18:10:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 18:10:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:10:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 18:10:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 18:10:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-15 18:10:06,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:06,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408607334] [2023-12-15 18:10:06,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408607334] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:10:06,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945960251] [2023-12-15 18:10:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:06,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:10:06,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:10:06,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:10:07,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:10:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:07,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:10:07,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:10:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-15 18:10:07,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:10:07,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945960251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:07,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:10:07,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-15 18:10:07,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007783458] [2023-12-15 18:10:07,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:07,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:07,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:07,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:07,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:10:07,293 INFO L87 Difference]: Start difference. First operand 4451 states and 5631 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 18:10:07,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:07,655 INFO L93 Difference]: Finished difference Result 12583 states and 15633 transitions. [2023-12-15 18:10:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:07,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2023-12-15 18:10:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:07,679 INFO L225 Difference]: With dead ends: 12583 [2023-12-15 18:10:07,679 INFO L226 Difference]: Without dead ends: 8517 [2023-12-15 18:10:07,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:10:07,687 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 48 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:07,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1364 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:10:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2023-12-15 18:10:08,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8509. [2023-12-15 18:10:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 6490 states have (on average 1.250693374422188) internal successors, (8117), 6615 states have internal predecessors, (8117), 1037 states have call successors, (1037), 736 states have call predecessors, (1037), 980 states have return successors, (1420), 1160 states have call predecessors, (1420), 1033 states have call successors, (1420) [2023-12-15 18:10:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 10574 transitions. [2023-12-15 18:10:08,038 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 10574 transitions. Word has length 175 [2023-12-15 18:10:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:08,038 INFO L495 AbstractCegarLoop]: Abstraction has 8509 states and 10574 transitions. [2023-12-15 18:10:08,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 18:10:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 10574 transitions. [2023-12-15 18:10:08,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-15 18:10:08,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:08,043 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:08,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:10:08,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 18:10:08,248 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:08,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash 972222072, now seen corresponding path program 1 times [2023-12-15 18:10:08,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:08,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244395552] [2023-12-15 18:10:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:08,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:10:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:10:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:10:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:10:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 18:10:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:10:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 18:10:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 18:10:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:10:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:10:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-15 18:10:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 18:10:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:10:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:10:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 18:10:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 18:10:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-15 18:10:08,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:08,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244395552] [2023-12-15 18:10:08,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244395552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:10:08,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114183345] [2023-12-15 18:10:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:08,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:10:08,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:10:08,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:10:08,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:10:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:08,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:10:08,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:10:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-15 18:10:08,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:10:08,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114183345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:08,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:10:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-15 18:10:08,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677961970] [2023-12-15 18:10:08,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:08,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:08,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:08,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:08,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:10:08,692 INFO L87 Difference]: Start difference. First operand 8509 states and 10574 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 18:10:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:09,033 INFO L93 Difference]: Finished difference Result 14519 states and 18294 transitions. [2023-12-15 18:10:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:09,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2023-12-15 18:10:09,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:09,036 INFO L225 Difference]: With dead ends: 14519 [2023-12-15 18:10:09,036 INFO L226 Difference]: Without dead ends: 375 [2023-12-15 18:10:09,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:10:09,055 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 635 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:09,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 677 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:10:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-15 18:10:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-12-15 18:10:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 339 states have (on average 1.640117994100295) internal successors, (556), 341 states have internal predecessors, (556), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:10:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 612 transitions. [2023-12-15 18:10:09,064 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 612 transitions. Word has length 175 [2023-12-15 18:10:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:09,064 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 612 transitions. [2023-12-15 18:10:09,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 18:10:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 612 transitions. [2023-12-15 18:10:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:09,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:09,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:09,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:10:09,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:10:09,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:09,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash -647349812, now seen corresponding path program 1 times [2023-12-15 18:10:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:09,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228128034] [2023-12-15 18:10:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:09,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:09,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:09,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228128034] [2023-12-15 18:10:09,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228128034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:09,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:09,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:10:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046454369] [2023-12-15 18:10:09,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:10:09,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:10:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:10:09,442 INFO L87 Difference]: Start difference. First operand 375 states and 612 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-12-15 18:10:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:10,996 INFO L93 Difference]: Finished difference Result 880 states and 1458 transitions. [2023-12-15 18:10:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:10:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:10,998 INFO L225 Difference]: With dead ends: 880 [2023-12-15 18:10:10,998 INFO L226 Difference]: Without dead ends: 515 [2023-12-15 18:10:10,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:10:11,000 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1053 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:11,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 680 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:10:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-15 18:10:11,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 375. [2023-12-15 18:10:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 339 states have (on average 1.6371681415929205) internal successors, (555), 341 states have internal predecessors, (555), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:10:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 611 transitions. [2023-12-15 18:10:11,012 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 611 transitions. Word has length 172 [2023-12-15 18:10:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:11,013 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 611 transitions. [2023-12-15 18:10:11,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-12-15 18:10:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 611 transitions. [2023-12-15 18:10:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:11,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:11,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:11,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:10:11,014 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:11,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2051218998, now seen corresponding path program 1 times [2023-12-15 18:10:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:11,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397602083] [2023-12-15 18:10:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:11,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397602083] [2023-12-15 18:10:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397602083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:11,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:10:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358518210] [2023-12-15 18:10:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:10:11,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:10:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:10:11,198 INFO L87 Difference]: Start difference. First operand 375 states and 611 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-12-15 18:10:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:12,560 INFO L93 Difference]: Finished difference Result 872 states and 1441 transitions. [2023-12-15 18:10:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:10:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:12,570 INFO L225 Difference]: With dead ends: 872 [2023-12-15 18:10:12,570 INFO L226 Difference]: Without dead ends: 515 [2023-12-15 18:10:12,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:10:12,571 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1044 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:12,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 678 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:10:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-15 18:10:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 375. [2023-12-15 18:10:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 339 states have (on average 1.6342182890855457) internal successors, (554), 341 states have internal predecessors, (554), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:10:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 610 transitions. [2023-12-15 18:10:12,583 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 610 transitions. Word has length 172 [2023-12-15 18:10:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:12,584 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 610 transitions. [2023-12-15 18:10:12,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-12-15 18:10:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 610 transitions. [2023-12-15 18:10:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:12,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:12,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:12,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:10:12,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:12,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:12,586 INFO L85 PathProgramCache]: Analyzing trace with hash -646027320, now seen corresponding path program 1 times [2023-12-15 18:10:12,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:12,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708067254] [2023-12-15 18:10:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:12,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:12,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708067254] [2023-12-15 18:10:12,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708067254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:12,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:12,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:10:12,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702858695] [2023-12-15 18:10:12,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:12,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:10:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:10:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:10:12,807 INFO L87 Difference]: Start difference. First operand 375 states and 610 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:15,338 INFO L93 Difference]: Finished difference Result 1386 states and 2306 transitions. [2023-12-15 18:10:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:10:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:15,341 INFO L225 Difference]: With dead ends: 1386 [2023-12-15 18:10:15,341 INFO L226 Difference]: Without dead ends: 1031 [2023-12-15 18:10:15,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:10:15,342 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1597 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:15,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1147 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:10:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-15 18:10:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 750. [2023-12-15 18:10:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 685 states have (on average 1.6452554744525547) internal successors, (1127), 688 states have internal predecessors, (1127), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-12-15 18:10:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1230 transitions. [2023-12-15 18:10:15,368 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1230 transitions. Word has length 172 [2023-12-15 18:10:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:15,368 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1230 transitions. [2023-12-15 18:10:15,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1230 transitions. [2023-12-15 18:10:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:15,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:15,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:15,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:10:15,369 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:15,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash 359077956, now seen corresponding path program 1 times [2023-12-15 18:10:15,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:15,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988298776] [2023-12-15 18:10:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:15,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988298776] [2023-12-15 18:10:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988298776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:15,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409954716] [2023-12-15 18:10:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:15,604 INFO L87 Difference]: Start difference. First operand 750 states and 1230 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:19,180 INFO L93 Difference]: Finished difference Result 2297 states and 3828 transitions. [2023-12-15 18:10:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:10:19,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:19,184 INFO L225 Difference]: With dead ends: 2297 [2023-12-15 18:10:19,184 INFO L226 Difference]: Without dead ends: 1567 [2023-12-15 18:10:19,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:10:19,186 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1634 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 4019 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:19,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 2188 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4019 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:10:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2023-12-15 18:10:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1096. [2023-12-15 18:10:19,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1002 states have (on average 1.6387225548902196) internal successors, (1642), 1006 states have internal predecessors, (1642), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-15 18:10:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1791 transitions. [2023-12-15 18:10:19,219 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1791 transitions. Word has length 172 [2023-12-15 18:10:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:19,219 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1791 transitions. [2023-12-15 18:10:19,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1791 transitions. [2023-12-15 18:10:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:19,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:19,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:19,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:10:19,220 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:19,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash 744940358, now seen corresponding path program 1 times [2023-12-15 18:10:19,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:19,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228324544] [2023-12-15 18:10:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:19,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:19,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:19,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228324544] [2023-12-15 18:10:19,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228324544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:19,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:19,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:19,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331332193] [2023-12-15 18:10:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:19,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:19,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:19,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:19,421 INFO L87 Difference]: Start difference. First operand 1096 states and 1791 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:23,206 INFO L93 Difference]: Finished difference Result 3632 states and 6043 transitions. [2023-12-15 18:10:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:10:23,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:23,213 INFO L225 Difference]: With dead ends: 3632 [2023-12-15 18:10:23,213 INFO L226 Difference]: Without dead ends: 2556 [2023-12-15 18:10:23,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:10:23,217 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1632 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 4015 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:23,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 2186 Invalid, 4084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4015 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:10:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2023-12-15 18:10:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1789. [2023-12-15 18:10:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1637 states have (on average 1.6328649969456324) internal successors, (2673), 1643 states have internal predecessors, (2673), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-15 18:10:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2918 transitions. [2023-12-15 18:10:23,296 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2918 transitions. Word has length 172 [2023-12-15 18:10:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:23,296 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 2918 transitions. [2023-12-15 18:10:23,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2918 transitions. [2023-12-15 18:10:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:23,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:23,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:23,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:10:23,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:23,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash 480292868, now seen corresponding path program 1 times [2023-12-15 18:10:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:23,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848012898] [2023-12-15 18:10:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:23,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848012898] [2023-12-15 18:10:23,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848012898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:23,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:23,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715973622] [2023-12-15 18:10:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:23,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:23,498 INFO L87 Difference]: Start difference. First operand 1789 states and 2918 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:27,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:27,068 INFO L93 Difference]: Finished difference Result 6189 states and 10262 transitions. [2023-12-15 18:10:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:10:27,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:27,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:27,077 INFO L225 Difference]: With dead ends: 6189 [2023-12-15 18:10:27,078 INFO L226 Difference]: Without dead ends: 4420 [2023-12-15 18:10:27,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:10:27,081 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1628 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:27,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 2186 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:10:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2023-12-15 18:10:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3176. [2023-12-15 18:10:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 2908 states have (on average 1.6282668500687758) internal successors, (4735), 2918 states have internal predecessors, (4735), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-12-15 18:10:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 5178 transitions. [2023-12-15 18:10:27,181 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 5178 transitions. Word has length 172 [2023-12-15 18:10:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:27,181 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 5178 transitions. [2023-12-15 18:10:27,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 5178 transitions. [2023-12-15 18:10:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:27,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:27,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:27,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:10:27,183 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:27,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:27,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1883548794, now seen corresponding path program 1 times [2023-12-15 18:10:27,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:27,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189185469] [2023-12-15 18:10:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:27,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:27,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189185469] [2023-12-15 18:10:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189185469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:27,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:27,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:27,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55014206] [2023-12-15 18:10:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:27,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:27,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:27,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:27,396 INFO L87 Difference]: Start difference. First operand 3176 states and 5178 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:30,934 INFO L93 Difference]: Finished difference Result 11302 states and 18716 transitions. [2023-12-15 18:10:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:10:30,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:30,951 INFO L225 Difference]: With dead ends: 11302 [2023-12-15 18:10:30,951 INFO L226 Difference]: Without dead ends: 8146 [2023-12-15 18:10:30,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:10:30,957 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1756 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:30,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 1416 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3304 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:10:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2023-12-15 18:10:31,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 5955. [2023-12-15 18:10:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5955 states, 5455 states have (on average 1.625114573785518) internal successors, (8865), 5473 states have internal predecessors, (8865), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-15 18:10:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 9722 transitions. [2023-12-15 18:10:31,178 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 9722 transitions. Word has length 172 [2023-12-15 18:10:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:31,178 INFO L495 AbstractCegarLoop]: Abstraction has 5955 states and 9722 transitions. [2023-12-15 18:10:31,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 9722 transitions. [2023-12-15 18:10:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:31,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:31,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:31,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:10:31,182 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:31,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1088239556, now seen corresponding path program 1 times [2023-12-15 18:10:31,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:31,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820233344] [2023-12-15 18:10:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:31,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:31,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:31,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:31,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:31,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820233344] [2023-12-15 18:10:31,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820233344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:31,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:31,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:31,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121302542] [2023-12-15 18:10:31,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:31,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:31,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:31,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:31,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:31,387 INFO L87 Difference]: Start difference. First operand 5955 states and 9722 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:35,313 INFO L93 Difference]: Finished difference Result 21512 states and 35654 transitions. [2023-12-15 18:10:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:10:35,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:35,354 INFO L225 Difference]: With dead ends: 21512 [2023-12-15 18:10:35,354 INFO L226 Difference]: Without dead ends: 15577 [2023-12-15 18:10:35,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:10:35,372 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1626 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:35,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 2186 Invalid, 4033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3964 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:10:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2023-12-15 18:10:35,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 11543. [2023-12-15 18:10:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11543 states, 10579 states have (on average 1.6236884393609983) internal successors, (17177), 10613 states have internal predecessors, (17177), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-12-15 18:10:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11543 states to 11543 states and 18916 transitions. [2023-12-15 18:10:35,832 INFO L78 Accepts]: Start accepts. Automaton has 11543 states and 18916 transitions. Word has length 172 [2023-12-15 18:10:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:35,832 INFO L495 AbstractCegarLoop]: Abstraction has 11543 states and 18916 transitions. [2023-12-15 18:10:35,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 11543 states and 18916 transitions. [2023-12-15 18:10:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:35,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:35,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:35,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:10:35,839 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:35,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1426527106, now seen corresponding path program 1 times [2023-12-15 18:10:35,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:35,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139245031] [2023-12-15 18:10:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:35,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:36,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:36,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:36,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139245031] [2023-12-15 18:10:36,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139245031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:36,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:36,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905531328] [2023-12-15 18:10:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:36,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:36,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:36,042 INFO L87 Difference]: Start difference. First operand 11543 states and 18916 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:40,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:40,037 INFO L93 Difference]: Finished difference Result 41966 states and 69786 transitions. [2023-12-15 18:10:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:10:40,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:40,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:40,133 INFO L225 Difference]: With dead ends: 41966 [2023-12-15 18:10:40,133 INFO L226 Difference]: Without dead ends: 30443 [2023-12-15 18:10:40,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:10:40,160 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1625 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3951 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:40,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 2186 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3951 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:10:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30443 states. [2023-12-15 18:10:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30443 to 22748. [2023-12-15 18:10:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22748 states, 20856 states have (on average 1.622698504027618) internal successors, (33843), 20922 states have internal predecessors, (33843), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2023-12-15 18:10:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22748 states to 22748 states and 37508 transitions. [2023-12-15 18:10:41,369 INFO L78 Accepts]: Start accepts. Automaton has 22748 states and 37508 transitions. Word has length 172 [2023-12-15 18:10:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:41,369 INFO L495 AbstractCegarLoop]: Abstraction has 22748 states and 37508 transitions. [2023-12-15 18:10:41,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22748 states and 37508 transitions. [2023-12-15 18:10:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:41,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:41,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:41,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:10:41,394 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:41,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1853081604, now seen corresponding path program 1 times [2023-12-15 18:10:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:41,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523219857] [2023-12-15 18:10:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:41,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:41,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:41,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523219857] [2023-12-15 18:10:41,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523219857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:41,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:41,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:41,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228769415] [2023-12-15 18:10:41,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:41,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:41,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:41,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:41,661 INFO L87 Difference]: Start difference. First operand 22748 states and 37508 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:47,008 INFO L93 Difference]: Finished difference Result 82873 states and 138648 transitions. [2023-12-15 18:10:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:10:47,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-15 18:10:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:47,192 INFO L225 Difference]: With dead ends: 82873 [2023-12-15 18:10:47,192 INFO L226 Difference]: Without dead ends: 60145 [2023-12-15 18:10:47,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:10:47,248 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1624 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:47,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 2186 Invalid, 4007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3938 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:10:47,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60145 states. [2023-12-15 18:10:49,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60145 to 45221. [2023-12-15 18:10:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45221 states, 41473 states have (on average 1.6219950329129795) internal successors, (67269), 41603 states have internal predecessors, (67269), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2023-12-15 18:10:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45221 states to 45221 states and 75272 transitions. [2023-12-15 18:10:49,443 INFO L78 Accepts]: Start accepts. Automaton has 45221 states and 75272 transitions. Word has length 172 [2023-12-15 18:10:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,443 INFO L495 AbstractCegarLoop]: Abstraction has 45221 states and 75272 transitions. [2023-12-15 18:10:49,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:10:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 45221 states and 75272 transitions. [2023-12-15 18:10:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 18:10:49,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:10:49,462 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1312652098, now seen corresponding path program 1 times [2023-12-15 18:10:49,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71804489] [2023-12-15 18:10:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:10:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:10:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 18:10:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 18:10:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 18:10:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71804489] [2023-12-15 18:10:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71804489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:10:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983481312] [2023-12-15 18:10:49,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:10:49,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:10:49,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:10:49,657 INFO L87 Difference]: Start difference. First operand 45221 states and 75272 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-15 18:10:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:10:53,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:10:53,615 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1053 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:53,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 1276 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:10:53,616 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:10:53,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:10:53,617 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (45221states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (63113 states constructed, input type IntersectNwa). [2023-12-15 18:10:53,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:10:53,621 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:53,622 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:10:53,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:10:53 BoogieIcfgContainer [2023-12-15 18:10:53,625 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:10:53,625 INFO L158 Benchmark]: Toolchain (without parser) took 62290.81ms. Allocated memory was 191.9MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 144.7MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 921.2MB. Max. memory is 8.0GB. [2023-12-15 18:10:53,625 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:10:53,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.64ms. Allocated memory is still 191.9MB. Free memory was 144.7MB in the beginning and 115.0MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-15 18:10:53,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.35ms. Allocated memory is still 191.9MB. Free memory was 115.0MB in the beginning and 163.6MB in the end (delta: -48.6MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. [2023-12-15 18:10:53,626 INFO L158 Benchmark]: Boogie Preprocessor took 72.64ms. Allocated memory is still 191.9MB. Free memory was 163.6MB in the beginning and 156.8MB in the end (delta: 6.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 18:10:53,626 INFO L158 Benchmark]: RCFGBuilder took 1000.75ms. Allocated memory was 191.9MB in the beginning and 339.7MB in the end (delta: 147.8MB). Free memory was 156.8MB in the beginning and 306.3MB in the end (delta: -149.5MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-12-15 18:10:53,626 INFO L158 Benchmark]: TraceAbstraction took 60768.21ms. Allocated memory was 339.7MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 305.2MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 933.5MB. Max. memory is 8.0GB. [2023-12-15 18:10:53,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-15 18:10:53,635 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 369.64ms. Allocated memory is still 191.9MB. Free memory was 144.7MB in the beginning and 115.0MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.35ms. Allocated memory is still 191.9MB. Free memory was 115.0MB in the beginning and 163.6MB in the end (delta: -48.6MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 72.64ms. Allocated memory is still 191.9MB. Free memory was 163.6MB in the beginning and 156.8MB in the end (delta: 6.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1000.75ms. Allocated memory was 191.9MB in the beginning and 339.7MB in the end (delta: 147.8MB). Free memory was 156.8MB in the beginning and 306.3MB in the end (delta: -149.5MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * TraceAbstraction took 60768.21ms. Allocated memory was 339.7MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 305.2MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 933.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 599]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 599). Cancelled while NwaCegarLoop was constructing difference of abstraction (45221states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (63113 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while NwaCegarLoop was constructing difference of abstraction (45221states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (63113 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 481 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 60.7s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 49.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35289 SdHoareTripleChecker+Valid, 33.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34898 mSDsluCounter, 40122 SdHoareTripleChecker+Invalid, 28.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29977 mSDsCounter, 3514 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50978 IncrementalHoareTripleChecker+Invalid, 54492 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3514 mSolverCounterUnsat, 10145 mSDtfsCounter, 50978 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1278 GetRequests, 935 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45221occurred in iteration=22, InterpolantAutomatonStates: 291, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.7s AutomataMinimizationTime, 22 MinimizatonAttempts, 33252 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 3513 NumberOfCodeBlocks, 3513 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 3487 ConstructedInterpolants, 0 QuantifiedInterpolants, 8661 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1976 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 26 InterpolantComputations, 23 PerfectInterpolantSequences, 761/779 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown