/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.09.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:41:38,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:41:38,131 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:41:38,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:41:38,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:41:38,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:41:38,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:41:38,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:41:38,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:41:38,167 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:41:38,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:41:38,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:41:38,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:41:38,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:41:38,169 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:41:38,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:41:38,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:41:38,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:41:38,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:41:38,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:41:38,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:41:38,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:41:38,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:41:38,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:41:38,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:41:38,174 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:41:38,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:41:38,174 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:41:38,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:41:38,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:41:38,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:41:38,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:41:38,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:41:38,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:41:38,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:41:38,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:41:38,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:41:38,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:41:38,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:41:38,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:41:38,177 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:41:38,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:41:38,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:41:38,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:41:38,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:41:38,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:41:38,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:41:38,451 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:41:38,451 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:41:38,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c [2023-12-19 01:41:39,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:41:39,840 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:41:39,841 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.09.cil-2.c [2023-12-19 01:41:39,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8af85049/4015f92c5d784abdbf6a9a6c92662c4b/FLAG544816659 [2023-12-19 01:41:39,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8af85049/4015f92c5d784abdbf6a9a6c92662c4b [2023-12-19 01:41:39,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:41:39,875 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:41:39,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:41:39,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:41:39,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:41:39,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:41:39" (1/1) ... [2023-12-19 01:41:39,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e93fdfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:39, skipping insertion in model container [2023-12-19 01:41:39,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:41:39" (1/1) ... [2023-12-19 01:41:39,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:41:40,133 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.09.cil-2.c[911,924] [2023-12-19 01:41:40,185 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.09.cil-2.c[8416,8429] [2023-12-19 01:41:40,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:41:40,323 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:41:40,342 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.09.cil-2.c[911,924] [2023-12-19 01:41:40,363 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.09.cil-2.c[8416,8429] [2023-12-19 01:41:40,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:41:40,422 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:41:40,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40 WrapperNode [2023-12-19 01:41:40,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:41:40,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:41:40,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:41:40,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:41:40,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,499 INFO L138 Inliner]: procedures = 73, calls = 89, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 932 [2023-12-19 01:41:40,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:41:40,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:41:40,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:41:40,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:41:40,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,553 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]. [2023-12-19 01:41:40,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:41:40,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:41:40,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:41:40,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:41:40,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (1/1) ... [2023-12-19 01:41:40,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:41:40,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:41:40,657 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) [2023-12-19 01:41:40,684 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 [2023-12-19 01:41:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:41:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:41:40,691 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:41:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-19 01:41:40,693 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-19 01:41:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:41:40,693 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:41:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:41:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:41:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-19 01:41:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-19 01:41:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:41:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:41:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:41:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:41:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-19 01:41:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-19 01:41:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-19 01:41:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-19 01:41:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-19 01:41:40,739 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-19 01:41:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:41:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:41:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:41:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:41:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:41:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-19 01:41:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-19 01:41:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:41:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:41:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:41:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:41:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:41:40,741 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:41:40,918 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:41:40,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:41:41,643 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-19 01:41:41,643 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; [2023-12-19 01:41:41,711 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:41:41,788 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:41:41,788 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-19 01:41:41,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:41:41 BoogieIcfgContainer [2023-12-19 01:41:41,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:41:41,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:41:41,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:41:41,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:41:41,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:41:39" (1/3) ... [2023-12-19 01:41:41,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5156a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:41:41, skipping insertion in model container [2023-12-19 01:41:41,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:41:40" (2/3) ... [2023-12-19 01:41:41,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5156a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:41:41, skipping insertion in model container [2023-12-19 01:41:41,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:41:41" (3/3) ... [2023-12-19 01:41:41,796 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.09.cil-2.c [2023-12-19 01:41:41,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:41:41,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:41:41,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:41:41,890 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;@1edbfedb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:41:41,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:41:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 332 states have (on average 1.7078313253012047) internal successors, (567), 340 states have internal predecessors, (567), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-19 01:41:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:41:41,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:41,914 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] [2023-12-19 01:41:41,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1544299474, now seen corresponding path program 1 times [2023-12-19 01:41:41,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:41,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593636400] [2023-12-19 01:41:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:41,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:41:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:42,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:41:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:41:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:41:42,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:42,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593636400] [2023-12-19 01:41:42,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593636400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:42,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:42,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:41:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192005659] [2023-12-19 01:41:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:42,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:41:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:41:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:41:42,360 INFO L87 Difference]: Start difference. First operand has 391 states, 332 states have (on average 1.7078313253012047) internal successors, (567), 340 states have internal predecessors, (567), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:41:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:43,285 INFO L93 Difference]: Finished difference Result 778 states and 1289 transitions. [2023-12-19 01:41:43,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:41:43,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-19 01:41:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:43,307 INFO L225 Difference]: With dead ends: 778 [2023-12-19 01:41:43,308 INFO L226 Difference]: Without dead ends: 402 [2023-12-19 01:41:43,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:41:43,322 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 877 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:43,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1020 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:41:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-19 01:41:43,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 385. [2023-12-19 01:41:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 329 states have (on average 1.6018237082066868) internal successors, (527), 334 states have internal predecessors, (527), 41 states have call successors, (41), 15 states have call predecessors, (41), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-19 01:41:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 605 transitions. [2023-12-19 01:41:43,395 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 605 transitions. Word has length 57 [2023-12-19 01:41:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:43,395 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 605 transitions. [2023-12-19 01:41:43,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:41:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 605 transitions. [2023-12-19 01:41:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:41:43,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:43,398 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] [2023-12-19 01:41:43,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:41:43,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:43,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2025379732, now seen corresponding path program 1 times [2023-12-19 01:41:43,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:43,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851314468] [2023-12-19 01:41:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:43,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:43,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:41:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:41:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:41:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:41:43,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:43,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851314468] [2023-12-19 01:41:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851314468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:43,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:41:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925131950] [2023-12-19 01:41:43,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:41:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:41:43,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:41:43,621 INFO L87 Difference]: Start difference. First operand 385 states and 605 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:41:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:44,636 INFO L93 Difference]: Finished difference Result 617 states and 951 transitions. [2023-12-19 01:41:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:41:44,637 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 [2023-12-19 01:41:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:44,644 INFO L225 Difference]: With dead ends: 617 [2023-12-19 01:41:44,644 INFO L226 Difference]: Without dead ends: 523 [2023-12-19 01:41:44,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:41:44,647 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1328 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:44,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1324 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:41:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-19 01:41:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 486. [2023-12-19 01:41:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 408 states have (on average 1.5735294117647058) internal successors, (642), 415 states have internal predecessors, (642), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-19 01:41:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 751 transitions. [2023-12-19 01:41:44,713 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 751 transitions. Word has length 57 [2023-12-19 01:41:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:44,713 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 751 transitions. [2023-12-19 01:41:44,714 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) [2023-12-19 01:41:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 751 transitions. [2023-12-19 01:41:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:41:44,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:44,723 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] [2023-12-19 01:41:44,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:41:44,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:44,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash 81386964, now seen corresponding path program 1 times [2023-12-19 01:41:44,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:44,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514018151] [2023-12-19 01:41:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:44,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:44,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:44,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:41:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:44,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:41:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:41:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:41:44,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514018151] [2023-12-19 01:41:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514018151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:44,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:44,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:41:44,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39739448] [2023-12-19 01:41:44,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:44,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:41:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:41:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:41:44,927 INFO L87 Difference]: Start difference. First operand 486 states and 751 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:41:46,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:46,267 INFO L93 Difference]: Finished difference Result 847 states and 1280 transitions. [2023-12-19 01:41:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:41:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-19 01:41:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:46,272 INFO L225 Difference]: With dead ends: 847 [2023-12-19 01:41:46,272 INFO L226 Difference]: Without dead ends: 659 [2023-12-19 01:41:46,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:41:46,274 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1178 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:46,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1875 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:41:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-12-19 01:41:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 587. [2023-12-19 01:41:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 487 states have (on average 1.5523613963039014) internal successors, (756), 496 states have internal predecessors, (756), 67 states have call successors, (67), 29 states have call predecessors, (67), 31 states have return successors, (76), 65 states have call predecessors, (76), 63 states have call successors, (76) [2023-12-19 01:41:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 899 transitions. [2023-12-19 01:41:46,312 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 899 transitions. Word has length 57 [2023-12-19 01:41:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:46,313 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 899 transitions. [2023-12-19 01:41:46,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:41:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 899 transitions. [2023-12-19 01:41:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:41:46,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:46,315 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] [2023-12-19 01:41:46,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:41:46,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:46,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash 974873302, now seen corresponding path program 1 times [2023-12-19 01:41:46,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:46,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118349111] [2023-12-19 01:41:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:46,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:46,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:46,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:41:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:41:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:41:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:41:46,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:46,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118349111] [2023-12-19 01:41:46,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118349111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:46,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:46,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:41:46,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202970475] [2023-12-19 01:41:46,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:46,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:41:46,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:46,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:41:46,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:41:46,474 INFO L87 Difference]: Start difference. First operand 587 states and 899 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) [2023-12-19 01:41:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:48,273 INFO L93 Difference]: Finished difference Result 1985 states and 2948 transitions. [2023-12-19 01:41:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:41:48,274 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 [2023-12-19 01:41:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:48,284 INFO L225 Difference]: With dead ends: 1985 [2023-12-19 01:41:48,284 INFO L226 Difference]: Without dead ends: 1684 [2023-12-19 01:41:48,287 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 [2023-12-19 01:41:48,294 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 3143 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3161 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:48,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3161 Valid, 2124 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:41:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-19 01:41:48,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1551. [2023-12-19 01:41:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1246 states have (on average 1.4550561797752808) internal successors, (1813), 1270 states have internal predecessors, (1813), 177 states have call successors, (177), 112 states have call predecessors, (177), 126 states have return successors, (209), 171 states have call predecessors, (209), 173 states have call successors, (209) [2023-12-19 01:41:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2199 transitions. [2023-12-19 01:41:48,434 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2199 transitions. Word has length 57 [2023-12-19 01:41:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:48,435 INFO L495 AbstractCegarLoop]: Abstraction has 1551 states and 2199 transitions. [2023-12-19 01:41:48,436 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) [2023-12-19 01:41:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2199 transitions. [2023-12-19 01:41:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:41:48,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:48,438 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] [2023-12-19 01:41:48,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:41:48,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:48,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash 368307447, now seen corresponding path program 1 times [2023-12-19 01:41:48,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:48,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77118538] [2023-12-19 01:41:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:48,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:48,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:48,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 01:41:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:41:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:41:48,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:48,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77118538] [2023-12-19 01:41:48,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77118538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:48,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:48,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:41:48,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159540807] [2023-12-19 01:41:48,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:48,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:41:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:41:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:41:48,672 INFO L87 Difference]: Start difference. First operand 1551 states and 2199 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) [2023-12-19 01:41:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:49,881 INFO L93 Difference]: Finished difference Result 2948 states and 4147 transitions. [2023-12-19 01:41:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:41:49,882 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 [2023-12-19 01:41:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:49,890 INFO L225 Difference]: With dead ends: 2948 [2023-12-19 01:41:49,890 INFO L226 Difference]: Without dead ends: 1689 [2023-12-19 01:41:49,894 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 [2023-12-19 01:41:49,895 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 775 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:49,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1927 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1793 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:41:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-12-19 01:41:49,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1583. [2023-12-19 01:41:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1270 states have (on average 1.441732283464567) internal successors, (1831), 1294 states have internal predecessors, (1831), 177 states have call successors, (177), 112 states have call predecessors, (177), 134 states have return successors, (217), 179 states have call predecessors, (217), 173 states have call successors, (217) [2023-12-19 01:41:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2225 transitions. [2023-12-19 01:41:49,993 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2225 transitions. Word has length 58 [2023-12-19 01:41:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:49,993 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2225 transitions. [2023-12-19 01:41:49,993 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) [2023-12-19 01:41:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2225 transitions. [2023-12-19 01:41:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:41:49,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:49,995 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] [2023-12-19 01:41:49,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:41:49,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:49,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 295920889, now seen corresponding path program 1 times [2023-12-19 01:41:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067438871] [2023-12-19 01:41:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 01:41:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:41:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:41:50,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067438871] [2023-12-19 01:41:50,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067438871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:50,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:50,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:41:50,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590147015] [2023-12-19 01:41:50,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:50,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:41:50,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:50,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:41:50,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:41:50,150 INFO L87 Difference]: Start difference. First operand 1583 states and 2225 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) [2023-12-19 01:41:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:52,212 INFO L93 Difference]: Finished difference Result 4842 states and 6786 transitions. [2023-12-19 01:41:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:41:52,213 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 [2023-12-19 01:41:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:52,222 INFO L225 Difference]: With dead ends: 4842 [2023-12-19 01:41:52,222 INFO L226 Difference]: Without dead ends: 1953 [2023-12-19 01:41:52,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:41:52,231 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 3676 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3694 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:52,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3694 Valid, 1850 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 01:41:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2023-12-19 01:41:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1797. [2023-12-19 01:41:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1412 states have (on average 1.388101983002833) internal successors, (1960), 1438 states have internal predecessors, (1960), 217 states have call successors, (217), 140 states have call predecessors, (217), 166 states have return successors, (263), 221 states have call predecessors, (263), 213 states have call successors, (263) [2023-12-19 01:41:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2440 transitions. [2023-12-19 01:41:52,344 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2440 transitions. Word has length 58 [2023-12-19 01:41:52,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:52,344 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2440 transitions. [2023-12-19 01:41:52,344 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) [2023-12-19 01:41:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2440 transitions. [2023-12-19 01:41:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:41:52,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:52,346 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] [2023-12-19 01:41:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:41:52,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:52,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1134707862, now seen corresponding path program 1 times [2023-12-19 01:41:52,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:52,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690425879] [2023-12-19 01:41:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:41:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:41:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:41:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:41:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:52,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690425879] [2023-12-19 01:41:52,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690425879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:52,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:52,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:41:52,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138207926] [2023-12-19 01:41:52,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:52,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:41:52,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:52,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:41:52,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:41:52,515 INFO L87 Difference]: Start difference. First operand 1797 states and 2440 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) [2023-12-19 01:41:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:53,703 INFO L93 Difference]: Finished difference Result 3482 states and 4702 transitions. [2023-12-19 01:41:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:41:53,703 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 [2023-12-19 01:41:53,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:53,713 INFO L225 Difference]: With dead ends: 3482 [2023-12-19 01:41:53,714 INFO L226 Difference]: Without dead ends: 1977 [2023-12-19 01:41:53,718 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 [2023-12-19 01:41:53,720 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 518 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:53,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 2137 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:41:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-12-19 01:41:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1845. [2023-12-19 01:41:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1448 states have (on average 1.3743093922651934) internal successors, (1990), 1474 states have internal predecessors, (1990), 217 states have call successors, (217), 140 states have call predecessors, (217), 178 states have return successors, (275), 233 states have call predecessors, (275), 213 states have call successors, (275) [2023-12-19 01:41:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2482 transitions. [2023-12-19 01:41:53,841 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2482 transitions. Word has length 80 [2023-12-19 01:41:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:53,843 INFO L495 AbstractCegarLoop]: Abstraction has 1845 states and 2482 transitions. [2023-12-19 01:41:53,844 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) [2023-12-19 01:41:53,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2482 transitions. [2023-12-19 01:41:53,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:41:53,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:53,845 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] [2023-12-19 01:41:53,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:41:53,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:53,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1231986732, now seen corresponding path program 1 times [2023-12-19 01:41:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:53,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027761028] [2023-12-19 01:41:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:53,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:53,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:53,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:53,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:54,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:41:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:41:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:41:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:41:54,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:54,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027761028] [2023-12-19 01:41:54,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027761028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:54,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:54,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:41:54,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759722604] [2023-12-19 01:41:54,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:54,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:41:54,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:41:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:41:54,063 INFO L87 Difference]: Start difference. First operand 1845 states and 2482 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) [2023-12-19 01:41:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:55,308 INFO L93 Difference]: Finished difference Result 3244 states and 4318 transitions. [2023-12-19 01:41:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:41:55,308 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 [2023-12-19 01:41:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:55,318 INFO L225 Difference]: With dead ends: 3244 [2023-12-19 01:41:55,319 INFO L226 Difference]: Without dead ends: 1912 [2023-12-19 01:41:55,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-19 01:41:55,323 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 1450 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:55,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1379 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:41:55,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2023-12-19 01:41:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1637. [2023-12-19 01:41:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1293 states have (on average 1.3805104408352669) internal successors, (1785), 1314 states have internal predecessors, (1785), 189 states have call successors, (189), 121 states have call predecessors, (189), 153 states have return successors, (235), 203 states have call predecessors, (235), 185 states have call successors, (235) [2023-12-19 01:41:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2209 transitions. [2023-12-19 01:41:55,438 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2209 transitions. Word has length 80 [2023-12-19 01:41:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:55,439 INFO L495 AbstractCegarLoop]: Abstraction has 1637 states and 2209 transitions. [2023-12-19 01:41:55,439 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) [2023-12-19 01:41:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2209 transitions. [2023-12-19 01:41:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:41:55,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:55,440 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] [2023-12-19 01:41:55,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:41:55,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:55,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash -808340010, now seen corresponding path program 1 times [2023-12-19 01:41:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:55,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378061816] [2023-12-19 01:41:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:55,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:41:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:41:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:41:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:41:55,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:55,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378061816] [2023-12-19 01:41:55,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378061816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:55,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:55,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:41:55,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220277089] [2023-12-19 01:41:55,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:55,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:41:55,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:55,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:41:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:41:55,538 INFO L87 Difference]: Start difference. First operand 1637 states and 2209 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) [2023-12-19 01:41:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:56,404 INFO L93 Difference]: Finished difference Result 4537 states and 6069 transitions. [2023-12-19 01:41:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:41:56,405 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 [2023-12-19 01:41:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:56,420 INFO L225 Difference]: With dead ends: 4537 [2023-12-19 01:41:56,420 INFO L226 Difference]: Without dead ends: 3193 [2023-12-19 01:41:56,427 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 [2023-12-19 01:41:56,427 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1382 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:56,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1080 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:41:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2023-12-19 01:41:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 2983. [2023-12-19 01:41:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2319 states have (on average 1.332470892626132) internal successors, (3090), 2369 states have internal predecessors, (3090), 350 states have call successors, (350), 234 states have call predecessors, (350), 312 states have return successors, (518), 382 states have call predecessors, (518), 346 states have call successors, (518) [2023-12-19 01:41:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 3958 transitions. [2023-12-19 01:41:56,658 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 3958 transitions. Word has length 80 [2023-12-19 01:41:56,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:56,658 INFO L495 AbstractCegarLoop]: Abstraction has 2983 states and 3958 transitions. [2023-12-19 01:41:56,658 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) [2023-12-19 01:41:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 3958 transitions. [2023-12-19 01:41:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:41:56,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:56,660 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] [2023-12-19 01:41:56,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:41:56,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:56,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash -731439212, now seen corresponding path program 1 times [2023-12-19 01:41:56,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:56,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729741772] [2023-12-19 01:41:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:56,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:41:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:41:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:41:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:41:56,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:56,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729741772] [2023-12-19 01:41:56,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729741772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:56,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:56,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:41:56,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262078463] [2023-12-19 01:41:56,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:56,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:41:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:41:56,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:41:56,735 INFO L87 Difference]: Start difference. First operand 2983 states and 3958 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) [2023-12-19 01:41:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:57,438 INFO L93 Difference]: Finished difference Result 4440 states and 5815 transitions. [2023-12-19 01:41:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:41:57,439 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 [2023-12-19 01:41:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:57,448 INFO L225 Difference]: With dead ends: 4440 [2023-12-19 01:41:57,448 INFO L226 Difference]: Without dead ends: 1750 [2023-12-19 01:41:57,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:41:57,455 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 870 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:57,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 992 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:41:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2023-12-19 01:41:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1637. [2023-12-19 01:41:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1293 states have (on average 1.3518948182521269) internal successors, (1748), 1314 states have internal predecessors, (1748), 189 states have call successors, (189), 121 states have call predecessors, (189), 153 states have return successors, (235), 203 states have call predecessors, (235), 185 states have call successors, (235) [2023-12-19 01:41:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2172 transitions. [2023-12-19 01:41:57,578 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2172 transitions. Word has length 80 [2023-12-19 01:41:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:57,578 INFO L495 AbstractCegarLoop]: Abstraction has 1637 states and 2172 transitions. [2023-12-19 01:41:57,579 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) [2023-12-19 01:41:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2172 transitions. [2023-12-19 01:41:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:41:57,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:57,582 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] [2023-12-19 01:41:57,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:41:57,583 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:57,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:57,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1475534508, now seen corresponding path program 1 times [2023-12-19 01:41:57,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:57,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325844570] [2023-12-19 01:41:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:57,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:41:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:41:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:41:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:41:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:41:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:41:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:41:57,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:57,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325844570] [2023-12-19 01:41:57,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325844570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:57,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:57,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:41:57,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146189742] [2023-12-19 01:41:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:57,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:41:57,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:57,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:41:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:41:57,713 INFO L87 Difference]: Start difference. First operand 1637 states and 2172 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) [2023-12-19 01:41:59,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:41:59,271 INFO L93 Difference]: Finished difference Result 3786 states and 4969 transitions. [2023-12-19 01:41:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 01:41:59,272 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 [2023-12-19 01:41:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:59,283 INFO L225 Difference]: With dead ends: 3786 [2023-12-19 01:41:59,283 INFO L226 Difference]: Without dead ends: 2373 [2023-12-19 01:41:59,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-12-19 01:41:59,287 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1743 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:59,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 1938 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:41:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-12-19 01:41:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2209. [2023-12-19 01:41:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1711 states have (on average 1.3103448275862069) internal successors, (2242), 1740 states have internal predecessors, (2242), 266 states have call successors, (266), 169 states have call predecessors, (266), 230 states have return successors, (366), 301 states have call predecessors, (366), 262 states have call successors, (366) [2023-12-19 01:41:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 2874 transitions. [2023-12-19 01:41:59,429 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 2874 transitions. Word has length 81 [2023-12-19 01:41:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:59,430 INFO L495 AbstractCegarLoop]: Abstraction has 2209 states and 2874 transitions. [2023-12-19 01:41:59,430 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) [2023-12-19 01:41:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 2874 transitions. [2023-12-19 01:41:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:41:59,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:59,434 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] [2023-12-19 01:41:59,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:41:59,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:59,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:59,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2129168470, now seen corresponding path program 1 times [2023-12-19 01:41:59,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:59,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612028782] [2023-12-19 01:41:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:59,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:41:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:41:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:59,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:41:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:41:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:41:59,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:59,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612028782] [2023-12-19 01:41:59,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612028782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:59,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:59,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:41:59,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744743419] [2023-12-19 01:41:59,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:59,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:41:59,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:41:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:41:59,578 INFO L87 Difference]: Start difference. First operand 2209 states and 2874 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-12-19 01:42:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:01,120 INFO L93 Difference]: Finished difference Result 2582 states and 3492 transitions. [2023-12-19 01:42:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:42:01,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:01,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:01,131 INFO L225 Difference]: With dead ends: 2582 [2023-12-19 01:42:01,131 INFO L226 Difference]: Without dead ends: 2309 [2023-12-19 01:42:01,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:42:01,133 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 877 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:01,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 760 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:42:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2023-12-19 01:42:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2209. [2023-12-19 01:42:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1711 states have (on average 1.309760374050263) internal successors, (2241), 1740 states have internal predecessors, (2241), 266 states have call successors, (266), 169 states have call predecessors, (266), 230 states have return successors, (366), 301 states have call predecessors, (366), 262 states have call successors, (366) [2023-12-19 01:42:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 2873 transitions. [2023-12-19 01:42:01,353 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 2873 transitions. Word has length 132 [2023-12-19 01:42:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:01,353 INFO L495 AbstractCegarLoop]: Abstraction has 2209 states and 2873 transitions. [2023-12-19 01:42:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-12-19 01:42:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 2873 transitions. [2023-12-19 01:42:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:01,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:01,356 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] [2023-12-19 01:42:01,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:42:01,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:01,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:01,356 INFO L85 PathProgramCache]: Analyzing trace with hash -846996184, now seen corresponding path program 1 times [2023-12-19 01:42:01,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:01,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912760393] [2023-12-19 01:42:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:01,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:01,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:01,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:01,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:01,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912760393] [2023-12-19 01:42:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912760393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:01,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:01,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:42:01,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032694819] [2023-12-19 01:42:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:01,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:42:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:42:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:42:01,554 INFO L87 Difference]: Start difference. First operand 2209 states and 2873 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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) [2023-12-19 01:42:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:03,722 INFO L93 Difference]: Finished difference Result 2960 states and 4121 transitions. [2023-12-19 01:42:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:42:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:03,735 INFO L225 Difference]: With dead ends: 2960 [2023-12-19 01:42:03,736 INFO L226 Difference]: Without dead ends: 2691 [2023-12-19 01:42:03,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:42:03,739 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1386 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:03,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1096 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 01:42:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2023-12-19 01:42:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2490. [2023-12-19 01:42:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 1967 states have (on average 1.353329944077275) internal successors, (2662), 1997 states have internal predecessors, (2662), 284 states have call successors, (284), 175 states have call predecessors, (284), 237 states have return successors, (387), 319 states have call predecessors, (387), 280 states have call successors, (387) [2023-12-19 01:42:04,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3333 transitions. [2023-12-19 01:42:04,018 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3333 transitions. Word has length 132 [2023-12-19 01:42:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:04,020 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 3333 transitions. [2023-12-19 01:42:04,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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) [2023-12-19 01:42:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3333 transitions. [2023-12-19 01:42:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:04,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:04,023 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] [2023-12-19 01:42:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:42:04,023 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:04,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1154890086, now seen corresponding path program 1 times [2023-12-19 01:42:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:04,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292020392] [2023-12-19 01:42:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:04,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:04,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:04,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:04,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292020392] [2023-12-19 01:42:04,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292020392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:04,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:04,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:04,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228770493] [2023-12-19 01:42:04,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:04,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:04,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:04,267 INFO L87 Difference]: Start difference. First operand 2490 states and 3333 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:07,429 INFO L93 Difference]: Finished difference Result 3635 states and 5235 transitions. [2023-12-19 01:42:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:07,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:07,443 INFO L225 Difference]: With dead ends: 3635 [2023-12-19 01:42:07,443 INFO L226 Difference]: Without dead ends: 3085 [2023-12-19 01:42:07,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:07,445 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1407 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 3210 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:07,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 1950 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3210 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:42:07,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2023-12-19 01:42:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2750. [2023-12-19 01:42:07,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2202 states have (on average 1.3810172570390553) internal successors, (3041), 2233 states have internal predecessors, (3041), 302 states have call successors, (302), 181 states have call predecessors, (302), 244 states have return successors, (407), 338 states have call predecessors, (407), 298 states have call successors, (407) [2023-12-19 01:42:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3750 transitions. [2023-12-19 01:42:07,724 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3750 transitions. Word has length 132 [2023-12-19 01:42:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:07,724 INFO L495 AbstractCegarLoop]: Abstraction has 2750 states and 3750 transitions. [2023-12-19 01:42:07,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3750 transitions. [2023-12-19 01:42:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:07,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:07,727 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] [2023-12-19 01:42:07,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:42:07,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:07,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1412932248, now seen corresponding path program 1 times [2023-12-19 01:42:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732345315] [2023-12-19 01:42:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:08,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:08,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732345315] [2023-12-19 01:42:08,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732345315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:08,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:08,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539191679] [2023-12-19 01:42:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:08,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:08,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:08,003 INFO L87 Difference]: Start difference. First operand 2750 states and 3750 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:10,920 INFO L93 Difference]: Finished difference Result 4624 states and 6858 transitions. [2023-12-19 01:42:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:10,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:10,939 INFO L225 Difference]: With dead ends: 4624 [2023-12-19 01:42:10,939 INFO L226 Difference]: Without dead ends: 3814 [2023-12-19 01:42:10,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:10,947 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1405 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 3206 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:10,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 1948 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3206 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 01:42:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2023-12-19 01:42:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3271. [2023-12-19 01:42:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 2673 states have (on average 1.421623643845866) internal successors, (3800), 2706 states have internal predecessors, (3800), 338 states have call successors, (338), 193 states have call predecessors, (338), 258 states have return successors, (451), 376 states have call predecessors, (451), 334 states have call successors, (451) [2023-12-19 01:42:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4589 transitions. [2023-12-19 01:42:11,300 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4589 transitions. Word has length 132 [2023-12-19 01:42:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:11,300 INFO L495 AbstractCegarLoop]: Abstraction has 3271 states and 4589 transitions. [2023-12-19 01:42:11,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4589 transitions. [2023-12-19 01:42:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:11,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:11,303 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] [2023-12-19 01:42:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:42:11,303 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:11,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -941575898, now seen corresponding path program 1 times [2023-12-19 01:42:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003717797] [2023-12-19 01:42:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:11,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:11,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003717797] [2023-12-19 01:42:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003717797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:11,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:11,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563512016] [2023-12-19 01:42:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:11,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:11,536 INFO L87 Difference]: Start difference. First operand 3271 states and 4589 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:14,501 INFO L93 Difference]: Finished difference Result 6521 states and 9957 transitions. [2023-12-19 01:42:14,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:14,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:14,521 INFO L225 Difference]: With dead ends: 6521 [2023-12-19 01:42:14,522 INFO L226 Difference]: Without dead ends: 5190 [2023-12-19 01:42:14,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:14,528 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1401 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:14,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 1948 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 01:42:14,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2023-12-19 01:42:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 4314. [2023-12-19 01:42:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 3616 states have (on average 1.4706858407079646) internal successors, (5318), 3653 states have internal predecessors, (5318), 410 states have call successors, (410), 217 states have call predecessors, (410), 286 states have return successors, (545), 452 states have call predecessors, (545), 406 states have call successors, (545) [2023-12-19 01:42:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 6273 transitions. [2023-12-19 01:42:14,890 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 6273 transitions. Word has length 132 [2023-12-19 01:42:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:14,890 INFO L495 AbstractCegarLoop]: Abstraction has 4314 states and 6273 transitions. [2023-12-19 01:42:14,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 6273 transitions. [2023-12-19 01:42:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:14,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:14,894 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] [2023-12-19 01:42:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:42:14,894 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:14,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1706028456, now seen corresponding path program 1 times [2023-12-19 01:42:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:14,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432912896] [2023-12-19 01:42:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:15,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:15,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:15,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432912896] [2023-12-19 01:42:15,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432912896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:15,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:15,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:15,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317691507] [2023-12-19 01:42:15,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:15,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:15,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:15,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:15,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:15,158 INFO L87 Difference]: Start difference. First operand 4314 states and 6273 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:18,182 INFO L93 Difference]: Finished difference Result 10314 states and 16171 transitions. [2023-12-19 01:42:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:18,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:18,215 INFO L225 Difference]: With dead ends: 10314 [2023-12-19 01:42:18,216 INFO L226 Difference]: Without dead ends: 7940 [2023-12-19 01:42:18,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:18,228 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1397 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:18,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 1948 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3188 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 01:42:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7940 states. [2023-12-19 01:42:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7940 to 6405. [2023-12-19 01:42:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6405 states, 5507 states have (on average 1.5180679135645543) internal successors, (8360), 5552 states have internal predecessors, (8360), 554 states have call successors, (554), 265 states have call predecessors, (554), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2023-12-19 01:42:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6405 states to 6405 states and 9665 transitions. [2023-12-19 01:42:18,643 INFO L78 Accepts]: Start accepts. Automaton has 6405 states and 9665 transitions. Word has length 132 [2023-12-19 01:42:18,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:18,643 INFO L495 AbstractCegarLoop]: Abstraction has 6405 states and 9665 transitions. [2023-12-19 01:42:18,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 6405 states and 9665 transitions. [2023-12-19 01:42:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:18,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:18,648 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] [2023-12-19 01:42:18,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:42:18,649 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:18,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash -425322266, now seen corresponding path program 1 times [2023-12-19 01:42:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874319777] [2023-12-19 01:42:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:18,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:18,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874319777] [2023-12-19 01:42:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874319777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252856396] [2023-12-19 01:42:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:18,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:18,870 INFO L87 Difference]: Start difference. First operand 6405 states and 9665 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:22,026 INFO L93 Difference]: Finished difference Result 17899 states and 28657 transitions. [2023-12-19 01:42:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:22,086 INFO L225 Difference]: With dead ends: 17899 [2023-12-19 01:42:22,087 INFO L226 Difference]: Without dead ends: 13434 [2023-12-19 01:42:22,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:22,108 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1393 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:22,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 1948 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 01:42:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13434 states. [2023-12-19 01:42:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13434 to 10600. [2023-12-19 01:42:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10600 states, 9302 states have (on average 1.5547194151795314) internal successors, (14462), 9363 states have internal predecessors, (14462), 842 states have call successors, (842), 361 states have call predecessors, (842), 454 states have return successors, (1217), 908 states have call predecessors, (1217), 838 states have call successors, (1217) [2023-12-19 01:42:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10600 states to 10600 states and 16521 transitions. [2023-12-19 01:42:22,914 INFO L78 Accepts]: Start accepts. Automaton has 10600 states and 16521 transitions. Word has length 132 [2023-12-19 01:42:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:22,915 INFO L495 AbstractCegarLoop]: Abstraction has 10600 states and 16521 transitions. [2023-12-19 01:42:22,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:22,915 INFO L276 IsEmpty]: Start isEmpty. Operand 10600 states and 16521 transitions. [2023-12-19 01:42:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:22,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:22,924 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] [2023-12-19 01:42:22,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:42:22,924 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:22,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1463906840, now seen corresponding path program 1 times [2023-12-19 01:42:22,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:22,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342237210] [2023-12-19 01:42:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:22,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:23,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:23,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:23,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:23,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:23,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342237210] [2023-12-19 01:42:23,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342237210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:23,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:23,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:23,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105442264] [2023-12-19 01:42:23,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:23,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:23,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:23,136 INFO L87 Difference]: Start difference. First operand 10600 states and 16521 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:26,839 INFO L93 Difference]: Finished difference Result 33068 states and 53819 transitions. [2023-12-19 01:42:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:26,938 INFO L225 Difference]: With dead ends: 33068 [2023-12-19 01:42:26,939 INFO L226 Difference]: Without dead ends: 24408 [2023-12-19 01:42:26,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:26,979 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1395 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 3165 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:26,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 1948 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3165 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:42:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24408 states. [2023-12-19 01:42:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24408 to 19019. [2023-12-19 01:42:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19019 states, 16921 states have (on average 1.5783937119555582) internal successors, (26708), 17014 states have internal predecessors, (26708), 1418 states have call successors, (1418), 553 states have call predecessors, (1418), 678 states have return successors, (2311), 1516 states have call predecessors, (2311), 1414 states have call successors, (2311) [2023-12-19 01:42:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19019 states to 19019 states and 30437 transitions. [2023-12-19 01:42:28,293 INFO L78 Accepts]: Start accepts. Automaton has 19019 states and 30437 transitions. Word has length 132 [2023-12-19 01:42:28,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:28,293 INFO L495 AbstractCegarLoop]: Abstraction has 19019 states and 30437 transitions. [2023-12-19 01:42:28,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:28,294 INFO L276 IsEmpty]: Start isEmpty. Operand 19019 states and 30437 transitions. [2023-12-19 01:42:28,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:28,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:28,309 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] [2023-12-19 01:42:28,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:42:28,309 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:28,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash 857895078, now seen corresponding path program 1 times [2023-12-19 01:42:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:28,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509683419] [2023-12-19 01:42:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:28,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:28,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:28,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509683419] [2023-12-19 01:42:28,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509683419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:28,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:28,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:28,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304406439] [2023-12-19 01:42:28,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:28,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:28,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:28,503 INFO L87 Difference]: Start difference. First operand 19019 states and 30437 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:32,274 INFO L93 Difference]: Finished difference Result 63342 states and 104617 transitions. [2023-12-19 01:42:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:32,516 INFO L225 Difference]: With dead ends: 63342 [2023-12-19 01:42:32,517 INFO L226 Difference]: Without dead ends: 46263 [2023-12-19 01:42:32,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:32,586 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1482 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:32,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1354 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 01:42:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46263 states. [2023-12-19 01:42:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46263 to 35983. [2023-12-19 01:42:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35983 states, 32285 states have (on average 1.5926901037633576) internal successors, (51420), 32442 states have internal predecessors, (51420), 2570 states have call successors, (2570), 937 states have call predecessors, (2570), 1126 states have return successors, (4985), 2732 states have call predecessors, (4985), 2566 states have call successors, (4985) [2023-12-19 01:42:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35983 states to 35983 states and 58975 transitions. [2023-12-19 01:42:34,969 INFO L78 Accepts]: Start accepts. Automaton has 35983 states and 58975 transitions. Word has length 132 [2023-12-19 01:42:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:34,970 INFO L495 AbstractCegarLoop]: Abstraction has 35983 states and 58975 transitions. [2023-12-19 01:42:34,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 35983 states and 58975 transitions. [2023-12-19 01:42:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:34,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:34,996 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] [2023-12-19 01:42:34,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:42:34,998 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:34,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:34,998 INFO L85 PathProgramCache]: Analyzing trace with hash 234613476, now seen corresponding path program 1 times [2023-12-19 01:42:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:34,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260021847] [2023-12-19 01:42:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:34,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:35,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260021847] [2023-12-19 01:42:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260021847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:35,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:42:35,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152336563] [2023-12-19 01:42:35,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:35,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:42:35,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:35,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:42:35,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:42:35,210 INFO L87 Difference]: Start difference. First operand 35983 states and 58975 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:41,612 INFO L93 Difference]: Finished difference Result 136356 states and 229909 transitions. [2023-12-19 01:42:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:42:41,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-19 01:42:41,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:42,259 INFO L225 Difference]: With dead ends: 136356 [2023-12-19 01:42:42,260 INFO L226 Difference]: Without dead ends: 102313 [2023-12-19 01:42:42,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:42:42,402 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1722 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 4368 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:42,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 2788 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 4368 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 01:42:42,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102313 states. [2023-12-19 01:42:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102313 to 70550. [2023-12-19 01:42:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70550 states, 63652 states have (on average 1.5952994407088543) internal successors, (101544), 63937 states have internal predecessors, (101544), 4874 states have call successors, (4874), 1705 states have call predecessors, (4874), 2022 states have return successors, (11791), 5164 states have call predecessors, (11791), 4870 states have call successors, (11791) [2023-12-19 01:42:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70550 states to 70550 states and 118209 transitions. [2023-12-19 01:42:46,717 INFO L78 Accepts]: Start accepts. Automaton has 70550 states and 118209 transitions. Word has length 132 [2023-12-19 01:42:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:46,717 INFO L495 AbstractCegarLoop]: Abstraction has 70550 states and 118209 transitions. [2023-12-19 01:42:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 70550 states and 118209 transitions. [2023-12-19 01:42:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:42:46,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:46,768 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] [2023-12-19 01:42:46,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:42:46,768 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:46,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:46,769 INFO L85 PathProgramCache]: Analyzing trace with hash 380120552, now seen corresponding path program 1 times [2023-12-19 01:42:46,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:46,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670809707] [2023-12-19 01:42:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:46,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:42:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:42:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:42:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:42:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:47,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670809707] [2023-12-19 01:42:47,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670809707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:47,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:47,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:47,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022282304] [2023-12-19 01:42:47,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:47,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:47,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:47,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:47,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:47,275 INFO L87 Difference]: Start difference. First operand 70550 states and 118209 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:42:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:56,024 INFO L93 Difference]: Finished difference Result 278661 states and 472819 transitions. [2023-12-19 01:42:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:42:56,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:42:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:57,113 INFO L225 Difference]: With dead ends: 278661 [2023-12-19 01:42:57,113 INFO L226 Difference]: Without dead ends: 210051 [2023-12-19 01:42:57,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:42:57,324 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1472 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 3647 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:57,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1941 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3647 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 01:42:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210051 states. [2023-12-19 01:43:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210051 to 138911. [2023-12-19 01:43:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138911 states, 125869 states have (on average 1.6000921593084874) internal successors, (201402), 126410 states have internal predecessors, (201402), 9226 states have call successors, (9226), 3241 states have call predecessors, (9226), 3814 states have return successors, (29521), 9772 states have call predecessors, (29521), 9222 states have call successors, (29521) [2023-12-19 01:43:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138911 states to 138911 states and 240149 transitions. [2023-12-19 01:43:06,002 INFO L78 Accepts]: Start accepts. Automaton has 138911 states and 240149 transitions. Word has length 132 [2023-12-19 01:43:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:06,002 INFO L495 AbstractCegarLoop]: Abstraction has 138911 states and 240149 transitions. [2023-12-19 01:43:06,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:43:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 138911 states and 240149 transitions. [2023-12-19 01:43:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:43:06,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:06,388 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] [2023-12-19 01:43:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:43:06,388 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:06,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1769414566, now seen corresponding path program 1 times [2023-12-19 01:43:06,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:06,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193840361] [2023-12-19 01:43:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:43:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:43:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:43:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:43:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:06,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:06,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193840361] [2023-12-19 01:43:06,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193840361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:06,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:06,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913082240] [2023-12-19 01:43:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:06,583 INFO L87 Difference]: Start difference. First operand 138911 states and 240149 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:43:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:20,696 INFO L93 Difference]: Finished difference Result 547484 states and 955945 transitions. [2023-12-19 01:43:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:43:20,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-19 01:43:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:22,974 INFO L225 Difference]: With dead ends: 547484 [2023-12-19 01:43:22,974 INFO L226 Difference]: Without dead ends: 410513 [2023-12-19 01:43:23,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:43:23,534 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1681 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 3087 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 3087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:23,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 1937 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 3087 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:43:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410513 states. [2023-12-19 01:43:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410513 to 270512. [2023-12-19 01:43:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270512 states, 245438 states have (on average 1.5988233280910047) internal successors, (392412), 246491 states have internal predecessors, (392412), 17674 states have call successors, (17674), 6313 states have call predecessors, (17674), 7398 states have return successors, (77847), 18732 states have call predecessors, (77847), 17670 states have call successors, (77847) [2023-12-19 01:43:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270512 states to 270512 states and 487933 transitions. [2023-12-19 01:43:40,867 INFO L78 Accepts]: Start accepts. Automaton has 270512 states and 487933 transitions. Word has length 132 [2023-12-19 01:43:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:40,868 INFO L495 AbstractCegarLoop]: Abstraction has 270512 states and 487933 transitions. [2023-12-19 01:43:40,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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) [2023-12-19 01:43:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 270512 states and 487933 transitions. [2023-12-19 01:43:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:43:41,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:41,056 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] [2023-12-19 01:43:41,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:43:41,057 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:41,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:41,057 INFO L85 PathProgramCache]: Analyzing trace with hash -263979480, now seen corresponding path program 1 times [2023-12-19 01:43:41,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:41,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588277626] [2023-12-19 01:43:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:41,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 01:43:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 01:43:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 01:43:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:43:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:41,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:41,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588277626] [2023-12-19 01:43:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588277626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:41,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:41,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:41,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580877256] [2023-12-19 01:43:41,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:41,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:41,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:41,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:41,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:41,249 INFO L87 Difference]: Start difference. First operand 270512 states and 487933 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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)