/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.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:08:19,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:08:19,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:08:19,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:08:19,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:08:19,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:08:19,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:08:19,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:08:19,273 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:08:19,273 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:08:19,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:08:19,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:08:19,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:08:19,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:08:19,274 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:08:19,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:08:19,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:08:19,275 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:08:19,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:08:19,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:08:19,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:08:19,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:08:19,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:08:19,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:08:19,276 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:08:19,276 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:08:19,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:08:19,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:08:19,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:08:19,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:08:19,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:08:19,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:08:19,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:08:19,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:08:19,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:08:19,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:08:19,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:08:19,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:08:19,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:08:19,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:08:19,279 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:08:19,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:08:19,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:08:19,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:08:19,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:08:19,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:08:19,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:08:19,454 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:08:19,454 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:08:19,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c [2023-12-15 18:08:20,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:08:20,795 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:08:20,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c [2023-12-15 18:08:20,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8203c26/e431e646bfd44499902f5daacfc70646/FLAGca6bc1f31 [2023-12-15 18:08:20,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8203c26/e431e646bfd44499902f5daacfc70646 [2023-12-15 18:08:20,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:08:20,819 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:08:20,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:08:20,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:08:20,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:08:20,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:08:20" (1/1) ... [2023-12-15 18:08:20,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e97af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:20, skipping insertion in model container [2023-12-15 18:08:20,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:08:20" (1/1) ... [2023-12-15 18:08:20,863 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:08:20,988 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.01.cil-1.c[911,924] [2023-12-15 18:08:21,028 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.01.cil-1.c[8416,8429] [2023-12-15 18:08:21,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:08:21,058 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:08:21,065 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.01.cil-1.c[911,924] [2023-12-15 18:08:21,092 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.01.cil-1.c[8416,8429] [2023-12-15 18:08:21,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:08:21,124 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:08:21,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21 WrapperNode [2023-12-15 18:08:21,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:08:21,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:08:21,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:08:21,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:08:21,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,169 INFO L138 Inliner]: procedures = 57, calls = 64, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 446 [2023-12-15 18:08:21,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:08:21,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:08:21,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:08:21,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:08:21,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,201 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:08:21,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,206 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:08:21,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:08:21,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:08:21,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:08:21,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (1/1) ... [2023-12-15 18:08:21,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:08:21,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:21,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:08:21,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:08:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:08:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:08:21,283 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:08:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-15 18:08:21,283 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-15 18:08:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:08:21,283 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:08:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:08:21,283 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:08:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-15 18:08:21,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-15 18:08:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:08:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:08:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:08:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:08:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-15 18:08:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-15 18:08:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-15 18:08:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-15 18:08:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-15 18:08:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-15 18:08:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:08:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:08:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:08:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:08:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:08:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-15 18:08:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-15 18:08:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:08:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:08:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:08:21,285 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:08:21,365 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:08:21,367 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:08:21,694 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-15 18:08:21,694 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-12-15 18:08:21,743 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:08:21,773 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:08:21,773 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-15 18:08:21,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:08:21 BoogieIcfgContainer [2023-12-15 18:08:21,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:08:21,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:08:21,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:08:21,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:08:21,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:08:20" (1/3) ... [2023-12-15 18:08:21,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e13b440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:08:21, skipping insertion in model container [2023-12-15 18:08:21,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:21" (2/3) ... [2023-12-15 18:08:21,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e13b440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:08:21, skipping insertion in model container [2023-12-15 18:08:21,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:08:21" (3/3) ... [2023-12-15 18:08:21,780 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.01.cil-1.c [2023-12-15 18:08:21,796 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:08:21,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:08:21,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:08:21,895 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;@1e8db179, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:08:21,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:08:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 151 states have (on average 1.6225165562913908) internal successors, (245), 157 states have internal predecessors, (245), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-15 18:08:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 18:08:21,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:21,914 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] [2023-12-15 18:08:21,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:21,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash 635992734, now seen corresponding path program 1 times [2023-12-15 18:08:21,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:21,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130237330] [2023-12-15 18:08:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:21,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:22,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:22,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:22,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130237330] [2023-12-15 18:08:22,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130237330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:22,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:22,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:08:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755965881] [2023-12-15 18:08:22,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:22,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:08:22,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:22,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:08:22,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:08:22,362 INFO L87 Difference]: Start difference. First operand has 199 states, 151 states have (on average 1.6225165562913908) internal successors, (245), 157 states have internal predecessors, (245), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:08:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:23,035 INFO L93 Difference]: Finished difference Result 507 states and 787 transitions. [2023-12-15 18:08:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:08:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 18:08:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:23,046 INFO L225 Difference]: With dead ends: 507 [2023-12-15 18:08:23,046 INFO L226 Difference]: Without dead ends: 317 [2023-12-15 18:08:23,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:08:23,052 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 524 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:23,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 553 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:08:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-15 18:08:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 278. [2023-12-15 18:08:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 215 states have (on average 1.4930232558139536) internal successors, (321), 220 states have internal predecessors, (321), 41 states have call successors, (41), 20 states have call predecessors, (41), 20 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-12-15 18:08:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 404 transitions. [2023-12-15 18:08:23,101 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 404 transitions. Word has length 51 [2023-12-15 18:08:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:23,102 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 404 transitions. [2023-12-15 18:08:23,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:08:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 404 transitions. [2023-12-15 18:08:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 18:08:23,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:23,104 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] [2023-12-15 18:08:23,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:08:23,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:23,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1482341282, now seen corresponding path program 1 times [2023-12-15 18:08:23,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931244870] [2023-12-15 18:08:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:23,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:23,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931244870] [2023-12-15 18:08:23,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931244870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:23,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:23,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095130061] [2023-12-15 18:08:23,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:23,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:23,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:23,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:23,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:23,264 INFO L87 Difference]: Start difference. First operand 278 states and 404 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:08:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:23,959 INFO L93 Difference]: Finished difference Result 588 states and 856 transitions. [2023-12-15 18:08:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:08:23,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 18:08:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:23,963 INFO L225 Difference]: With dead ends: 588 [2023-12-15 18:08:23,963 INFO L226 Difference]: Without dead ends: 418 [2023-12-15 18:08:23,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:08:23,965 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 510 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:23,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 804 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:08:23,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-15 18:08:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 357. [2023-12-15 18:08:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 277 states have (on average 1.48014440433213) internal successors, (410), 283 states have internal predecessors, (410), 51 states have call successors, (51), 26 states have call predecessors, (51), 27 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-12-15 18:08:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 515 transitions. [2023-12-15 18:08:23,991 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 515 transitions. Word has length 51 [2023-12-15 18:08:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:23,992 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 515 transitions. [2023-12-15 18:08:23,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:08:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 515 transitions. [2023-12-15 18:08:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 18:08:23,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:23,993 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] [2023-12-15 18:08:23,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:08:23,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:23,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:23,994 INFO L85 PathProgramCache]: Analyzing trace with hash 110533984, now seen corresponding path program 1 times [2023-12-15 18:08:23,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:23,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864804316] [2023-12-15 18:08:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:23,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:24,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:24,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864804316] [2023-12-15 18:08:24,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864804316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:24,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:24,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:24,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515677022] [2023-12-15 18:08:24,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:24,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:24,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:24,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:24,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:24,077 INFO L87 Difference]: Start difference. First operand 357 states and 515 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:08:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:24,848 INFO L93 Difference]: Finished difference Result 898 states and 1297 transitions. [2023-12-15 18:08:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:08:24,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 18:08:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:24,852 INFO L225 Difference]: With dead ends: 898 [2023-12-15 18:08:24,852 INFO L226 Difference]: Without dead ends: 649 [2023-12-15 18:08:24,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:08:24,854 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 522 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:24,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 795 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:08:24,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-15 18:08:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 512. [2023-12-15 18:08:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 400 states have (on average 1.4675) internal successors, (587), 408 states have internal predecessors, (587), 69 states have call successors, (69), 38 states have call predecessors, (69), 41 states have return successors, (80), 70 states have call predecessors, (80), 67 states have call successors, (80) [2023-12-15 18:08:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 736 transitions. [2023-12-15 18:08:24,885 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 736 transitions. Word has length 51 [2023-12-15 18:08:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:24,885 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 736 transitions. [2023-12-15 18:08:24,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:08:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 736 transitions. [2023-12-15 18:08:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 18:08:24,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:24,887 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] [2023-12-15 18:08:24,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:08:24,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:24,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:24,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1734833182, now seen corresponding path program 1 times [2023-12-15 18:08:24,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:24,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534691308] [2023-12-15 18:08:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:24,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:24,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:24,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534691308] [2023-12-15 18:08:24,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534691308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:24,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:24,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:24,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938471062] [2023-12-15 18:08:24,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:24,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:24,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:24,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:24,988 INFO L87 Difference]: Start difference. First operand 512 states and 736 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:08:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:25,906 INFO L93 Difference]: Finished difference Result 2323 states and 3463 transitions. [2023-12-15 18:08:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:08:25,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-12-15 18:08:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:25,914 INFO L225 Difference]: With dead ends: 2323 [2023-12-15 18:08:25,914 INFO L226 Difference]: Without dead ends: 1920 [2023-12-15 18:08:25,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:08:25,916 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1042 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:25,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 677 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:08:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2023-12-15 18:08:25,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1600. [2023-12-15 18:08:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1245 states have (on average 1.427309236947791) internal successors, (1777), 1280 states have internal predecessors, (1777), 210 states have call successors, (210), 128 states have call predecessors, (210), 143 states have return successors, (305), 196 states have call predecessors, (305), 208 states have call successors, (305) [2023-12-15 18:08:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2292 transitions. [2023-12-15 18:08:25,985 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2292 transitions. Word has length 51 [2023-12-15 18:08:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:25,986 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2292 transitions. [2023-12-15 18:08:25,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:08:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2292 transitions. [2023-12-15 18:08:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 18:08:25,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:25,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:25,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:08:25,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:25,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1245975289, now seen corresponding path program 1 times [2023-12-15 18:08:25,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:25,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330983045] [2023-12-15 18:08:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:25,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:08:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:08:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:26,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330983045] [2023-12-15 18:08:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330983045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:26,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:08:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299156725] [2023-12-15 18:08:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:26,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:08:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:08:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:26,063 INFO L87 Difference]: Start difference. First operand 1600 states and 2292 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) [2023-12-15 18:08:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:26,702 INFO L93 Difference]: Finished difference Result 1832 states and 2639 transitions. [2023-12-15 18:08:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:08:26,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-15 18:08:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:26,709 INFO L225 Difference]: With dead ends: 1832 [2023-12-15 18:08:26,709 INFO L226 Difference]: Without dead ends: 1738 [2023-12-15 18:08:26,710 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 [2023-12-15 18:08:26,711 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 578 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:26,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 724 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:08:26,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2023-12-15 18:08:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1701. [2023-12-15 18:08:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1324 states have (on average 1.4297583081570997) internal successors, (1893), 1361 states have internal predecessors, (1893), 223 states have call successors, (223), 135 states have call predecessors, (223), 152 states have return successors, (323), 210 states have call predecessors, (323), 221 states have call successors, (323) [2023-12-15 18:08:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2439 transitions. [2023-12-15 18:08:26,786 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2439 transitions. Word has length 57 [2023-12-15 18:08:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:26,786 INFO L495 AbstractCegarLoop]: Abstraction has 1701 states and 2439 transitions. [2023-12-15 18:08:26,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:08:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2439 transitions. [2023-12-15 18:08:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 18:08:26,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:26,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:26,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:08:26,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:26,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash -698017479, now seen corresponding path program 1 times [2023-12-15 18:08:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:26,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388078149] [2023-12-15 18:08:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:08:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:08:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:26,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388078149] [2023-12-15 18:08:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388078149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:26,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:26,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:08:26,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524839684] [2023-12-15 18:08:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:26,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:08:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:26,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:08:26,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:26,880 INFO L87 Difference]: Start difference. First operand 1701 states and 2439 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) [2023-12-15 18:08:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:27,705 INFO L93 Difference]: Finished difference Result 2062 states and 2969 transitions. [2023-12-15 18:08:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:08:27,706 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 [2023-12-15 18:08:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:27,713 INFO L225 Difference]: With dead ends: 2062 [2023-12-15 18:08:27,713 INFO L226 Difference]: Without dead ends: 1874 [2023-12-15 18:08:27,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:08:27,715 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 554 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:27,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1049 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:08:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2023-12-15 18:08:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1802. [2023-12-15 18:08:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1403 states have (on average 1.4312188168210978) internal successors, (2008), 1442 states have internal predecessors, (2008), 236 states have call successors, (236), 142 states have call predecessors, (236), 161 states have return successors, (344), 224 states have call predecessors, (344), 234 states have call successors, (344) [2023-12-15 18:08:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2588 transitions. [2023-12-15 18:08:27,818 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2588 transitions. Word has length 57 [2023-12-15 18:08:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:27,818 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2588 transitions. [2023-12-15 18:08:27,819 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) [2023-12-15 18:08:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2588 transitions. [2023-12-15 18:08:27,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 18:08:27,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:27,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:27,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:08:27,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:27,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:27,821 INFO L85 PathProgramCache]: Analyzing trace with hash 195468859, now seen corresponding path program 1 times [2023-12-15 18:08:27,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:27,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530303008] [2023-12-15 18:08:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:08:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:08:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:27,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:27,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530303008] [2023-12-15 18:08:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530303008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:27,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885621060] [2023-12-15 18:08:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:27,888 INFO L87 Difference]: Start difference. First operand 1802 states and 2588 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:28,454 INFO L93 Difference]: Finished difference Result 2408 states and 3464 transitions. [2023-12-15 18:08:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:08:28,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 57 [2023-12-15 18:08:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:28,462 INFO L225 Difference]: With dead ends: 2408 [2023-12-15 18:08:28,462 INFO L226 Difference]: Without dead ends: 2125 [2023-12-15 18:08:28,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:08:28,464 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 784 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:28,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 628 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:08:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2023-12-15 18:08:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2054. [2023-12-15 18:08:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1600 states have (on average 1.42875) internal successors, (2286), 1643 states have internal predecessors, (2286), 266 states have call successors, (266), 163 states have call predecessors, (266), 186 states have return successors, (382), 254 states have call predecessors, (382), 264 states have call successors, (382) [2023-12-15 18:08:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2934 transitions. [2023-12-15 18:08:28,569 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2934 transitions. Word has length 57 [2023-12-15 18:08:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:28,569 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2934 transitions. [2023-12-15 18:08:28,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2934 transitions. [2023-12-15 18:08:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:08:28,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:28,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:28,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:08:28,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:28,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:28,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1598588300, now seen corresponding path program 1 times [2023-12-15 18:08:28,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:28,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842828966] [2023-12-15 18:08:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:28,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:28,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 18:08:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:08:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:28,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:28,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842828966] [2023-12-15 18:08:28,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842828966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:28,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:28,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:08:28,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269261118] [2023-12-15 18:08:28,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:28,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:08:28,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:28,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:08:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:08:28,675 INFO L87 Difference]: Start difference. First operand 2054 states and 2934 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:08:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:29,312 INFO L93 Difference]: Finished difference Result 2662 states and 3804 transitions. [2023-12-15 18:08:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:08:29,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-15 18:08:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:29,319 INFO L225 Difference]: With dead ends: 2662 [2023-12-15 18:08:29,320 INFO L226 Difference]: Without dead ends: 2127 [2023-12-15 18:08:29,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:08:29,321 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 215 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:29,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1025 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:08:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2023-12-15 18:08:29,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2066. [2023-12-15 18:08:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1609 states have (on average 1.4244872591671847) internal successors, (2292), 1652 states have internal predecessors, (2292), 266 states have call successors, (266), 163 states have call predecessors, (266), 189 states have return successors, (385), 257 states have call predecessors, (385), 264 states have call successors, (385) [2023-12-15 18:08:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 2943 transitions. [2023-12-15 18:08:29,413 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 2943 transitions. Word has length 58 [2023-12-15 18:08:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:29,413 INFO L495 AbstractCegarLoop]: Abstraction has 2066 states and 2943 transitions. [2023-12-15 18:08:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:08:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 2943 transitions. [2023-12-15 18:08:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:08:29,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:29,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:29,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:08:29,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:29,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1670974858, now seen corresponding path program 1 times [2023-12-15 18:08:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:29,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667626843] [2023-12-15 18:08:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 18:08:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:08:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:29,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667626843] [2023-12-15 18:08:29,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667626843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:29,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:29,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:08:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077491301] [2023-12-15 18:08:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:29,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:08:29,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:08:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:08:29,531 INFO L87 Difference]: Start difference. First operand 2066 states and 2943 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:31,014 INFO L93 Difference]: Finished difference Result 4065 states and 5858 transitions. [2023-12-15 18:08:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 18:08:31,015 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-15 18:08:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:31,024 INFO L225 Difference]: With dead ends: 4065 [2023-12-15 18:08:31,024 INFO L226 Difference]: Without dead ends: 2399 [2023-12-15 18:08:31,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 18:08:31,029 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 1153 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:31,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1333 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:08:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2023-12-15 18:08:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2269. [2023-12-15 18:08:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 1756 states have (on average 1.4071753986332574) internal successors, (2471), 1803 states have internal predecessors, (2471), 296 states have call successors, (296), 184 states have call predecessors, (296), 215 states have return successors, (434), 288 states have call predecessors, (434), 294 states have call successors, (434) [2023-12-15 18:08:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3201 transitions. [2023-12-15 18:08:31,138 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3201 transitions. Word has length 58 [2023-12-15 18:08:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:31,139 INFO L495 AbstractCegarLoop]: Abstraction has 2269 states and 3201 transitions. [2023-12-15 18:08:31,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3201 transitions. [2023-12-15 18:08:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:08:31,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:31,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:31,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:08:31,141 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:31,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:31,142 INFO L85 PathProgramCache]: Analyzing trace with hash -753332195, now seen corresponding path program 1 times [2023-12-15 18:08:31,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:31,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328802827] [2023-12-15 18:08:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:31,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:08:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:08:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328802827] [2023-12-15 18:08:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328802827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:31,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:31,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:08:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595423107] [2023-12-15 18:08:31,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:31,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:08:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:08:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:08:31,226 INFO L87 Difference]: Start difference. First operand 2269 states and 3201 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:08:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:31,874 INFO L93 Difference]: Finished difference Result 3152 states and 4440 transitions. [2023-12-15 18:08:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:08:31,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 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 59 [2023-12-15 18:08:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:31,882 INFO L225 Difference]: With dead ends: 3152 [2023-12-15 18:08:31,882 INFO L226 Difference]: Without dead ends: 2402 [2023-12-15 18:08:31,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:08:31,884 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 309 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:31,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 887 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:08:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2023-12-15 18:08:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2305. [2023-12-15 18:08:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1783 states have (on average 1.4010095344924285) internal successors, (2498), 1830 states have internal predecessors, (2498), 296 states have call successors, (296), 184 states have call predecessors, (296), 224 states have return successors, (443), 297 states have call predecessors, (443), 294 states have call successors, (443) [2023-12-15 18:08:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3237 transitions. [2023-12-15 18:08:31,995 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3237 transitions. Word has length 59 [2023-12-15 18:08:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:31,995 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3237 transitions. [2023-12-15 18:08:31,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:08:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3237 transitions. [2023-12-15 18:08:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:08:31,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:31,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:31,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:08:31,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:31,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:31,997 INFO L85 PathProgramCache]: Analyzing trace with hash -612783585, now seen corresponding path program 1 times [2023-12-15 18:08:31,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:31,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843558196] [2023-12-15 18:08:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:31,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:32,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:08:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:08:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:32,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:32,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843558196] [2023-12-15 18:08:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843558196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:32,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:08:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455895300] [2023-12-15 18:08:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:32,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:08:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:08:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:32,116 INFO L87 Difference]: Start difference. First operand 2305 states and 3237 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:08:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:32,844 INFO L93 Difference]: Finished difference Result 3199 states and 4454 transitions. [2023-12-15 18:08:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:08:32,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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 59 [2023-12-15 18:08:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:32,855 INFO L225 Difference]: With dead ends: 3199 [2023-12-15 18:08:32,855 INFO L226 Difference]: Without dead ends: 2493 [2023-12-15 18:08:32,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-15 18:08:32,857 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 562 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:32,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 720 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:08:32,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2023-12-15 18:08:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2312. [2023-12-15 18:08:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 1790 states have (on average 1.3983240223463687) internal successors, (2503), 1835 states have internal predecessors, (2503), 297 states have call successors, (297), 185 states have call predecessors, (297), 223 states have return successors, (439), 298 states have call predecessors, (439), 295 states have call successors, (439) [2023-12-15 18:08:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3239 transitions. [2023-12-15 18:08:33,017 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3239 transitions. Word has length 59 [2023-12-15 18:08:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:33,017 INFO L495 AbstractCegarLoop]: Abstraction has 2312 states and 3239 transitions. [2023-12-15 18:08:33,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:08:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3239 transitions. [2023-12-15 18:08:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:08:33,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:33,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:33,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:08:33,022 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:33,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1430432035, now seen corresponding path program 1 times [2023-12-15 18:08:33,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:33,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854603641] [2023-12-15 18:08:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:33,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:08:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:08:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:33,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:33,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854603641] [2023-12-15 18:08:33,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854603641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:33,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:33,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:33,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732585179] [2023-12-15 18:08:33,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:33,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:33,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:33,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:33,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:33,096 INFO L87 Difference]: Start difference. First operand 2312 states and 3239 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:08:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:33,616 INFO L93 Difference]: Finished difference Result 4034 states and 5598 transitions. [2023-12-15 18:08:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:08:33,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2023-12-15 18:08:33,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:33,626 INFO L225 Difference]: With dead ends: 4034 [2023-12-15 18:08:33,626 INFO L226 Difference]: Without dead ends: 3244 [2023-12-15 18:08:33,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:08:33,628 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 660 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:33,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 497 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:08:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2023-12-15 18:08:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 3086. [2023-12-15 18:08:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 2369 states have (on average 1.3748417053609119) internal successors, (3257), 2427 states have internal predecessors, (3257), 401 states have call successors, (401), 249 states have call predecessors, (401), 314 states have return successors, (629), 419 states have call predecessors, (629), 399 states have call successors, (629) [2023-12-15 18:08:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4287 transitions. [2023-12-15 18:08:33,776 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4287 transitions. Word has length 59 [2023-12-15 18:08:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:33,776 INFO L495 AbstractCegarLoop]: Abstraction has 3086 states and 4287 transitions. [2023-12-15 18:08:33,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:08:33,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4287 transitions. [2023-12-15 18:08:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:08:33,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:33,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:33,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:08:33,778 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:33,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:33,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1175759513, now seen corresponding path program 1 times [2023-12-15 18:08:33,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:33,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130549042] [2023-12-15 18:08:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:33,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:08:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:08:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:33,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130549042] [2023-12-15 18:08:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130549042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:33,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:08:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423853589] [2023-12-15 18:08:33,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:33,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:08:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:08:33,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:08:33,824 INFO L87 Difference]: Start difference. First operand 3086 states and 4287 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:08:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:34,214 INFO L93 Difference]: Finished difference Result 4668 states and 6502 transitions. [2023-12-15 18:08:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:08:34,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-15 18:08:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:34,230 INFO L225 Difference]: With dead ends: 4668 [2023-12-15 18:08:34,230 INFO L226 Difference]: Without dead ends: 1500 [2023-12-15 18:08:34,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:08:34,237 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 410 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:34,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 441 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:08:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2023-12-15 18:08:34,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1500. [2023-12-15 18:08:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1169 states have (on average 1.4208725406330196) internal successors, (1661), 1201 states have internal predecessors, (1661), 194 states have call successors, (194), 120 states have call predecessors, (194), 136 states have return successors, (291), 182 states have call predecessors, (291), 194 states have call successors, (291) [2023-12-15 18:08:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2146 transitions. [2023-12-15 18:08:34,306 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2146 transitions. Word has length 60 [2023-12-15 18:08:34,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:34,306 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 2146 transitions. [2023-12-15 18:08:34,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:08:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2146 transitions. [2023-12-15 18:08:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-15 18:08:34,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:34,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:34,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:08:34,309 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:34,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:34,309 INFO L85 PathProgramCache]: Analyzing trace with hash -254958315, now seen corresponding path program 1 times [2023-12-15 18:08:34,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:34,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454142672] [2023-12-15 18:08:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:34,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 18:08:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 18:08:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:08:34,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454142672] [2023-12-15 18:08:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454142672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961008719] [2023-12-15 18:08:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:34,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:34,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:34,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:08:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:08:34,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:08:34,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:34,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961008719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:34,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:34,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:08:34,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176388188] [2023-12-15 18:08:34,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:34,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:08:34,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:34,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:08:34,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:34,550 INFO L87 Difference]: Start difference. First operand 1500 states and 2146 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 18:08:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:34,692 INFO L93 Difference]: Finished difference Result 4317 states and 6275 transitions. [2023-12-15 18:08:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:08:34,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2023-12-15 18:08:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:34,702 INFO L225 Difference]: With dead ends: 4317 [2023-12-15 18:08:34,702 INFO L226 Difference]: Without dead ends: 2827 [2023-12-15 18:08:34,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:34,706 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 107 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:34,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 339 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:08:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2023-12-15 18:08:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2827. [2023-12-15 18:08:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2212 states have (on average 1.4037070524412296) internal successors, (3105), 2261 states have internal predecessors, (3105), 353 states have call successors, (353), 226 states have call predecessors, (353), 261 states have return successors, (590), 347 states have call predecessors, (590), 353 states have call successors, (590) [2023-12-15 18:08:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4048 transitions. [2023-12-15 18:08:34,829 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4048 transitions. Word has length 83 [2023-12-15 18:08:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:34,850 INFO L495 AbstractCegarLoop]: Abstraction has 2827 states and 4048 transitions. [2023-12-15 18:08:34,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 18:08:34,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4048 transitions. [2023-12-15 18:08:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 18:08:34,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:34,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:34,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:08:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-15 18:08:35,062 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:35,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1397568783, now seen corresponding path program 1 times [2023-12-15 18:08:35,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:35,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447364713] [2023-12-15 18:08:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:35,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 18:08:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-15 18:08:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 18:08:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-15 18:08:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447364713] [2023-12-15 18:08:35,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447364713] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823698138] [2023-12-15 18:08:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:35,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:35,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:35,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:35,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:08:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:08:35,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:08:35,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:35,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823698138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:35,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:08:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221964134] [2023-12-15 18:08:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:35,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:08:35,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:08:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:35,336 INFO L87 Difference]: Start difference. First operand 2827 states and 4048 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 18:08:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:35,527 INFO L93 Difference]: Finished difference Result 6364 states and 9215 transitions. [2023-12-15 18:08:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:08:35,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2023-12-15 18:08:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:35,540 INFO L225 Difference]: With dead ends: 6364 [2023-12-15 18:08:35,540 INFO L226 Difference]: Without dead ends: 4225 [2023-12-15 18:08:35,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:35,546 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:35,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 235 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:08:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2023-12-15 18:08:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4183. [2023-12-15 18:08:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4183 states, 3278 states have (on average 1.400549115314216) internal successors, (4591), 3348 states have internal predecessors, (4591), 517 states have call successors, (517), 336 states have call predecessors, (517), 387 states have return successors, (834), 506 states have call predecessors, (834), 517 states have call successors, (834) [2023-12-15 18:08:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 5942 transitions. [2023-12-15 18:08:35,767 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 5942 transitions. Word has length 106 [2023-12-15 18:08:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:35,767 INFO L495 AbstractCegarLoop]: Abstraction has 4183 states and 5942 transitions. [2023-12-15 18:08:35,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 18:08:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 5942 transitions. [2023-12-15 18:08:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:08:35,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:35,773 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:35,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:08:35,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 18:08:35,979 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:35,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash -687488582, now seen corresponding path program 1 times [2023-12-15 18:08:35,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:35,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564125028] [2023-12-15 18:08:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:35,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 18:08:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 18:08:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:08:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:08:36,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:36,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564125028] [2023-12-15 18:08:36,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564125028] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:36,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547646061] [2023-12-15 18:08:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:36,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:36,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:36,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:36,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:08:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:08:36,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 18:08:36,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:36,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547646061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:36,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:36,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:08:36,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723239167] [2023-12-15 18:08:36,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:36,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:08:36,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:08:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:36,159 INFO L87 Difference]: Start difference. First operand 4183 states and 5942 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 18:08:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:36,374 INFO L93 Difference]: Finished difference Result 8759 states and 12689 transitions. [2023-12-15 18:08:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:08:36,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 121 [2023-12-15 18:08:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:36,386 INFO L225 Difference]: With dead ends: 8759 [2023-12-15 18:08:36,386 INFO L226 Difference]: Without dead ends: 4587 [2023-12-15 18:08:36,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:36,393 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 112 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:36,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 143 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:08:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4587 states. [2023-12-15 18:08:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4587 to 4492. [2023-12-15 18:08:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 3562 states have (on average 1.3329590117911285) internal successors, (4748), 3627 states have internal predecessors, (4748), 513 states have call successors, (513), 362 states have call predecessors, (513), 416 states have return successors, (816), 510 states have call predecessors, (816), 513 states have call successors, (816) [2023-12-15 18:08:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 6077 transitions. [2023-12-15 18:08:36,583 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 6077 transitions. Word has length 121 [2023-12-15 18:08:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:36,583 INFO L495 AbstractCegarLoop]: Abstraction has 4492 states and 6077 transitions. [2023-12-15 18:08:36,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 18:08:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 6077 transitions. [2023-12-15 18:08:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:08:36,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:36,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:36,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:08:36,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:36,796 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:36,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:36,797 INFO L85 PathProgramCache]: Analyzing trace with hash -48704103, now seen corresponding path program 2 times [2023-12-15 18:08:36,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:36,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018570993] [2023-12-15 18:08:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:36,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 18:08:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 18:08:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:08:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-15 18:08:36,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:36,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018570993] [2023-12-15 18:08:36,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018570993] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:36,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380507203] [2023-12-15 18:08:36,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 18:08:36,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:36,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:36,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:36,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:08:36,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-15 18:08:36,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 18:08:36,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:08:36,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-15 18:08:36,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380507203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:36,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-15 18:08:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648421938] [2023-12-15 18:08:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:36,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:08:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:08:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:36,994 INFO L87 Difference]: Start difference. First operand 4492 states and 6077 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 18:08:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:37,197 INFO L93 Difference]: Finished difference Result 9011 states and 12512 transitions. [2023-12-15 18:08:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:08:37,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 121 [2023-12-15 18:08:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:37,208 INFO L225 Difference]: With dead ends: 9011 [2023-12-15 18:08:37,208 INFO L226 Difference]: Without dead ends: 4532 [2023-12-15 18:08:37,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:37,218 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 2 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:37,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 358 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:08:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2023-12-15 18:08:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 4512. [2023-12-15 18:08:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 3582 states have (on average 1.3101619207146846) internal successors, (4693), 3647 states have internal predecessors, (4693), 513 states have call successors, (513), 362 states have call predecessors, (513), 416 states have return successors, (816), 510 states have call predecessors, (816), 513 states have call successors, (816) [2023-12-15 18:08:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 6022 transitions. [2023-12-15 18:08:37,510 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 6022 transitions. Word has length 121 [2023-12-15 18:08:37,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:37,510 INFO L495 AbstractCegarLoop]: Abstraction has 4512 states and 6022 transitions. [2023-12-15 18:08:37,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 18:08:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 6022 transitions. [2023-12-15 18:08:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:08:37,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:37,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:37,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 18:08:37,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 18:08:37,724 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:37,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash -502757219, now seen corresponding path program 1 times [2023-12-15 18:08:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:37,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78588783] [2023-12-15 18:08:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 18:08:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 18:08:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:08:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 18:08:37,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78588783] [2023-12-15 18:08:37,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78588783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:37,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:37,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:08:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826306808] [2023-12-15 18:08:37,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:37,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:08:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:37,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:08:37,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:37,843 INFO L87 Difference]: Start difference. First operand 4512 states and 6022 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 18:08:38,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:38,390 INFO L93 Difference]: Finished difference Result 7264 states and 9616 transitions. [2023-12-15 18:08:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:08:38,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 121 [2023-12-15 18:08:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:38,399 INFO L225 Difference]: With dead ends: 7264 [2023-12-15 18:08:38,399 INFO L226 Difference]: Without dead ends: 4457 [2023-12-15 18:08:38,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:08:38,406 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 338 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:38,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 334 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:08:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2023-12-15 18:08:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3771. [2023-12-15 18:08:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2996 states have (on average 1.2880507343124166) internal successors, (3859), 3058 states have internal predecessors, (3859), 419 states have call successors, (419), 292 states have call predecessors, (419), 355 states have return successors, (687), 424 states have call predecessors, (687), 419 states have call successors, (687) [2023-12-15 18:08:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4965 transitions. [2023-12-15 18:08:38,594 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4965 transitions. Word has length 121 [2023-12-15 18:08:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:38,594 INFO L495 AbstractCegarLoop]: Abstraction has 3771 states and 4965 transitions. [2023-12-15 18:08:38,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 18:08:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4965 transitions. [2023-12-15 18:08:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:08:38,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:38,597 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:38,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:08:38,597 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:38,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1374306011, now seen corresponding path program 1 times [2023-12-15 18:08:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:38,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632539193] [2023-12-15 18:08:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 18:08:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 18:08:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:08:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 18:08:38,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632539193] [2023-12-15 18:08:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632539193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:38,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:38,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:08:38,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239764921] [2023-12-15 18:08:38,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:38,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:08:38,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:08:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:38,720 INFO L87 Difference]: Start difference. First operand 3771 states and 4965 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 18:08:39,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:39,280 INFO L93 Difference]: Finished difference Result 6913 states and 9082 transitions. [2023-12-15 18:08:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:08:39,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 121 [2023-12-15 18:08:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:39,290 INFO L225 Difference]: With dead ends: 6913 [2023-12-15 18:08:39,291 INFO L226 Difference]: Without dead ends: 4016 [2023-12-15 18:08:39,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:08:39,298 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 331 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:39,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 353 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:08:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2023-12-15 18:08:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3306. [2023-12-15 18:08:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3306 states, 2630 states have (on average 1.2927756653992395) internal successors, (3400), 2675 states have internal predecessors, (3400), 371 states have call successors, (371), 256 states have call predecessors, (371), 304 states have return successors, (601), 376 states have call predecessors, (601), 371 states have call successors, (601) [2023-12-15 18:08:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 4372 transitions. [2023-12-15 18:08:39,488 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 4372 transitions. Word has length 121 [2023-12-15 18:08:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:39,488 INFO L495 AbstractCegarLoop]: Abstraction has 3306 states and 4372 transitions. [2023-12-15 18:08:39,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 18:08:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 4372 transitions. [2023-12-15 18:08:39,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:08:39,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:39,490 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:39,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:08:39,491 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:39,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash 603572445, now seen corresponding path program 1 times [2023-12-15 18:08:39,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:39,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120064603] [2023-12-15 18:08:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:39,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 18:08:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 18:08:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:08:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-15 18:08:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120064603] [2023-12-15 18:08:39,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120064603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:39,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863729570] [2023-12-15 18:08:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:39,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:39,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:39,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 18:08:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:08:39,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 18:08:39,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:39,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863729570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:39,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:39,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-12-15 18:08:39,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392298387] [2023-12-15 18:08:39,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:39,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:08:39,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:08:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:08:39,648 INFO L87 Difference]: Start difference. First operand 3306 states and 4372 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-15 18:08:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:39,783 INFO L93 Difference]: Finished difference Result 6579 states and 8730 transitions. [2023-12-15 18:08:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:08:39,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 121 [2023-12-15 18:08:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:39,792 INFO L225 Difference]: With dead ends: 6579 [2023-12-15 18:08:39,792 INFO L226 Difference]: Without dead ends: 3469 [2023-12-15 18:08:39,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:08:39,798 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 92 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:39,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 251 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:08:39,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2023-12-15 18:08:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3285. [2023-12-15 18:08:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3285 states, 2609 states have (on average 1.2709850517439631) internal successors, (3316), 2654 states have internal predecessors, (3316), 371 states have call successors, (371), 256 states have call predecessors, (371), 304 states have return successors, (601), 376 states have call predecessors, (601), 371 states have call successors, (601) [2023-12-15 18:08:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4288 transitions. [2023-12-15 18:08:39,937 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4288 transitions. Word has length 121 [2023-12-15 18:08:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:39,937 INFO L495 AbstractCegarLoop]: Abstraction has 3285 states and 4288 transitions. [2023-12-15 18:08:39,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-15 18:08:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4288 transitions. [2023-12-15 18:08:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 18:08:39,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:39,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:39,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 18:08:40,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:40,145 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:40,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:40,145 INFO L85 PathProgramCache]: Analyzing trace with hash 718626576, now seen corresponding path program 1 times [2023-12-15 18:08:40,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:40,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56709848] [2023-12-15 18:08:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 18:08:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 18:08:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 18:08:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 18:08:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-15 18:08:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56709848] [2023-12-15 18:08:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56709848] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694366731] [2023-12-15 18:08:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:40,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:40,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:40,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:40,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 18:08:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:08:40,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 18:08:40,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:40,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694366731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:40,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:40,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-15 18:08:40,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195237579] [2023-12-15 18:08:40,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:40,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:08:40,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:08:40,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:40,323 INFO L87 Difference]: Start difference. First operand 3285 states and 4288 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 18:08:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:40,586 INFO L93 Difference]: Finished difference Result 9587 states and 12512 transitions. [2023-12-15 18:08:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:08:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2023-12-15 18:08:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:40,601 INFO L225 Difference]: With dead ends: 9587 [2023-12-15 18:08:40,601 INFO L226 Difference]: Without dead ends: 6317 [2023-12-15 18:08:40,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:40,610 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 105 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:40,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 320 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:08:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2023-12-15 18:08:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 5827. [2023-12-15 18:08:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 4632 states have (on average 1.2538860103626943) internal successors, (5808), 4716 states have internal predecessors, (5808), 659 states have call successors, (659), 460 states have call predecessors, (659), 535 states have return successors, (1019), 654 states have call predecessors, (1019), 659 states have call successors, (1019) [2023-12-15 18:08:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 7486 transitions. [2023-12-15 18:08:40,944 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 7486 transitions. Word has length 122 [2023-12-15 18:08:40,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:40,945 INFO L495 AbstractCegarLoop]: Abstraction has 5827 states and 7486 transitions. [2023-12-15 18:08:40,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 18:08:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 7486 transitions. [2023-12-15 18:08:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-15 18:08:40,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:40,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:40,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 18:08:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:41,154 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:41,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash -450238612, now seen corresponding path program 1 times [2023-12-15 18:08:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:41,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988627445] [2023-12-15 18:08:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:41,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 18:08:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 18:08:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 18:08:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-15 18:08:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-15 18:08:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988627445] [2023-12-15 18:08:41,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988627445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195562728] [2023-12-15 18:08:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:41,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:41,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:41,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:41,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 18:08:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:41,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:08:41,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 18:08:41,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:41,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195562728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:41,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:41,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-15 18:08:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304127582] [2023-12-15 18:08:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:41,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:08:41,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:41,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:08:41,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:08:41,355 INFO L87 Difference]: Start difference. First operand 5827 states and 7486 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 18:08:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:41,663 INFO L93 Difference]: Finished difference Result 8479 states and 11186 transitions. [2023-12-15 18:08:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:08:41,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2023-12-15 18:08:41,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:41,676 INFO L225 Difference]: With dead ends: 8479 [2023-12-15 18:08:41,677 INFO L226 Difference]: Without dead ends: 5363 [2023-12-15 18:08:41,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:08:41,687 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 73 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:41,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 312 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:08:41,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2023-12-15 18:08:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5297. [2023-12-15 18:08:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 4215 states have (on average 1.231079478054567) internal successors, (5189), 4293 states have internal predecessors, (5189), 601 states have call successors, (601), 420 states have call predecessors, (601), 480 states have return successors, (885), 587 states have call predecessors, (885), 601 states have call successors, (885) [2023-12-15 18:08:41,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 6675 transitions. [2023-12-15 18:08:41,927 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 6675 transitions. Word has length 123 [2023-12-15 18:08:41,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:41,927 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 6675 transitions. [2023-12-15 18:08:41,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 18:08:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 6675 transitions. [2023-12-15 18:08:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 18:08:41,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:41,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:41,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 18:08:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:42,136 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:42,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1360454050, now seen corresponding path program 1 times [2023-12-15 18:08:42,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:42,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48508488] [2023-12-15 18:08:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:42,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 18:08:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 18:08:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 18:08:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-15 18:08:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-15 18:08:42,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:42,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48508488] [2023-12-15 18:08:42,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48508488] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:42,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441249434] [2023-12-15 18:08:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:42,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:42,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:42,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:42,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 18:08:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:08:42,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-15 18:08:42,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:42,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441249434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:42,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:42,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-15 18:08:42,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866937766] [2023-12-15 18:08:42,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:42,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:08:42,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:42,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:08:42,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:08:42,350 INFO L87 Difference]: Start difference. First operand 5297 states and 6675 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 18:08:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:42,623 INFO L93 Difference]: Finished difference Result 10269 states and 13171 transitions. [2023-12-15 18:08:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:08:42,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2023-12-15 18:08:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:42,632 INFO L225 Difference]: With dead ends: 10269 [2023-12-15 18:08:42,632 INFO L226 Difference]: Without dead ends: 4117 [2023-12-15 18:08:42,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:08:42,641 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 11 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:42,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 358 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:08:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2023-12-15 18:08:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3995. [2023-12-15 18:08:42,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3203 states have (on average 1.2182329066500157) internal successors, (3902), 3253 states have internal predecessors, (3902), 443 states have call successors, (443), 317 states have call predecessors, (443), 348 states have return successors, (581), 426 states have call predecessors, (581), 443 states have call successors, (581) [2023-12-15 18:08:42,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 4926 transitions. [2023-12-15 18:08:42,810 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 4926 transitions. Word has length 124 [2023-12-15 18:08:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:42,810 INFO L495 AbstractCegarLoop]: Abstraction has 3995 states and 4926 transitions. [2023-12-15 18:08:42,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 18:08:42,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 4926 transitions. [2023-12-15 18:08:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-15 18:08:42,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:42,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:42,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 18:08:43,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-15 18:08:43,017 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:43,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash 865400034, now seen corresponding path program 1 times [2023-12-15 18:08:43,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:43,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310552550] [2023-12-15 18:08:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:43,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 18:08:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 18:08:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 18:08:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-15 18:08:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:08:43,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:43,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310552550] [2023-12-15 18:08:43,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310552550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:43,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:43,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:08:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522505097] [2023-12-15 18:08:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:43,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:08:43,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:08:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:08:43,100 INFO L87 Difference]: Start difference. First operand 3995 states and 4926 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-15 18:08:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:43,847 INFO L93 Difference]: Finished difference Result 8449 states and 10385 transitions. [2023-12-15 18:08:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:08:43,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 124 [2023-12-15 18:08:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:43,855 INFO L225 Difference]: With dead ends: 8449 [2023-12-15 18:08:43,855 INFO L226 Difference]: Without dead ends: 4944 [2023-12-15 18:08:43,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:08:43,859 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 384 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:43,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 349 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:08:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2023-12-15 18:08:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4429. [2023-12-15 18:08:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 3562 states have (on average 1.2139247613700168) internal successors, (4324), 3611 states have internal predecessors, (4324), 475 states have call successors, (475), 337 states have call predecessors, (475), 391 states have return successors, (610), 482 states have call predecessors, (610), 475 states have call successors, (610) [2023-12-15 18:08:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 5409 transitions. [2023-12-15 18:08:44,073 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 5409 transitions. Word has length 124 [2023-12-15 18:08:44,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:44,074 INFO L495 AbstractCegarLoop]: Abstraction has 4429 states and 5409 transitions. [2023-12-15 18:08:44,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-15 18:08:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 5409 transitions. [2023-12-15 18:08:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:08:44,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:44,077 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:44,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:08:44,077 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:44,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:44,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1490897935, now seen corresponding path program 1 times [2023-12-15 18:08:44,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:44,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519893198] [2023-12-15 18:08:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:44,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 18:08:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 18:08:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:08:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-15 18:08:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 18:08:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-15 18:08:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-15 18:08:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:08:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-15 18:08:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-15 18:08:44,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:44,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519893198] [2023-12-15 18:08:44,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519893198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:44,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364029384] [2023-12-15 18:08:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:44,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:44,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:44,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 18:08:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:08:44,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-15 18:08:44,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:44,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364029384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:44,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:44,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-15 18:08:44,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183581847] [2023-12-15 18:08:44,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:44,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:08:44,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:08:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:44,348 INFO L87 Difference]: Start difference. First operand 4429 states and 5409 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-15 18:08:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:44,618 INFO L93 Difference]: Finished difference Result 9715 states and 11926 transitions. [2023-12-15 18:08:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:08:44,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2023-12-15 18:08:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:44,631 INFO L225 Difference]: With dead ends: 9715 [2023-12-15 18:08:44,631 INFO L226 Difference]: Without dead ends: 6120 [2023-12-15 18:08:44,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:44,637 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 116 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:44,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 279 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:08:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6120 states. [2023-12-15 18:08:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6120 to 6117. [2023-12-15 18:08:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6117 states, 4913 states have (on average 1.2116832892326481) internal successors, (5953), 4976 states have internal predecessors, (5953), 664 states have call successors, (664), 471 states have call predecessors, (664), 539 states have return successors, (862), 671 states have call predecessors, (862), 664 states have call successors, (862) [2023-12-15 18:08:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 7479 transitions. [2023-12-15 18:08:44,942 INFO L78 Accepts]: Start accepts. Automaton has 6117 states and 7479 transitions. Word has length 142 [2023-12-15 18:08:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:44,942 INFO L495 AbstractCegarLoop]: Abstraction has 6117 states and 7479 transitions. [2023-12-15 18:08:44,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-15 18:08:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6117 states and 7479 transitions. [2023-12-15 18:08:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:08:44,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:44,946 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:44,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 18:08:45,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-15 18:08:45,151 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:45,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:45,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1983524109, now seen corresponding path program 1 times [2023-12-15 18:08:45,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:45,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626079645] [2023-12-15 18:08:45,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:45,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:08:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 18:08:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 18:08:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-15 18:08:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:08:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 18:08:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:08:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-15 18:08:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 18:08:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-15 18:08:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-15 18:08:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:08:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-15 18:08:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-15 18:08:45,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:45,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626079645] [2023-12-15 18:08:45,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626079645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:08:45,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649681717] [2023-12-15 18:08:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:45,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:08:45,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:45,297 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:08:45,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 18:08:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:45,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 18:08:45,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:08:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 18:08:45,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:08:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649681717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:45,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:08:45,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:08:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375582112] [2023-12-15 18:08:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:45,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:08:45,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:08:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:08:45,508 INFO L87 Difference]: Start difference. First operand 6117 states and 7479 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 18:08:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:45,747 INFO L93 Difference]: Finished difference Result 9036 states and 11156 transitions. [2023-12-15 18:08:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:08:45,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 142 [2023-12-15 18:08:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:45,748 INFO L225 Difference]: With dead ends: 9036 [2023-12-15 18:08:45,748 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 18:08:45,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:08:45,757 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 104 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:45,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 121 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:08:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 18:08:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 18:08:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:08:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 18:08:45,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2023-12-15 18:08:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:45,760 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 18:08:45,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 18:08:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 18:08:45,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 18:08:45,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:08:45,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:08:45,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 18:08:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 18:08:45,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-15 18:09:22,243 WARN L235 SmtUtils]: Removed 10 from assertion stack [2023-12-15 18:09:22,243 WARN L619 AbstractCegarLoop]: Verification canceled: while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 357ms.. [2023-12-15 18:09:22,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 18:09:22,257 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:09:22,258 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-15 18:09:22,261 INFO L158 Benchmark]: Toolchain (without parser) took 61441.80ms. Allocated memory was 230.7MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 174.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 382.4MB. Max. memory is 8.0GB. [2023-12-15 18:09:22,261 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 164.6MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:09:22,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.86ms. Allocated memory is still 230.7MB. Free memory was 174.6MB in the beginning and 156.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-15 18:09:22,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.21ms. Allocated memory is still 230.7MB. Free memory was 156.2MB in the beginning and 153.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 18:09:22,262 INFO L158 Benchmark]: Boogie Preprocessor took 44.97ms. Allocated memory is still 230.7MB. Free memory was 153.6MB in the beginning and 150.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 18:09:22,262 INFO L158 Benchmark]: RCFGBuilder took 557.80ms. Allocated memory is still 230.7MB. Free memory was 150.5MB in the beginning and 116.4MB in the end (delta: 34.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-15 18:09:22,263 INFO L158 Benchmark]: TraceAbstraction took 60484.59ms. Allocated memory was 230.7MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 115.9MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 323.7MB. Max. memory is 8.0GB. [2023-12-15 18:09:22,266 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 164.6MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 305.86ms. Allocated memory is still 230.7MB. Free memory was 174.6MB in the beginning and 156.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.21ms. Allocated memory is still 230.7MB. Free memory was 156.2MB in the beginning and 153.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.97ms. Allocated memory is still 230.7MB. Free memory was 153.6MB in the beginning and 150.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 557.80ms. Allocated memory is still 230.7MB. Free memory was 150.5MB in the beginning and 116.4MB in the end (delta: 34.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 60484.59ms. Allocated memory was 230.7MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 115.9MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 323.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-30-12-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-29-12-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown