./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfe43dac9acec5d21450031b4b25696c02a17019cbc94a74a969e06371e0741b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:44:08,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:44:08,375 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:44:08,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:44:08,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:44:08,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:44:08,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:44:08,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:44:08,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:44:08,405 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:44:08,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:44:08,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:44:08,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:44:08,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:44:08,407 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:44:08,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:44:08,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:44:08,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:44:08,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:44:08,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:44:08,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:44:08,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:44:08,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:44:08,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:44:08,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:44:08,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:44:08,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:44:08,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:44:08,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:44:08,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:44:08,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:44:08,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:44:08,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:44:08,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:44:08,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:44:08,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:44:08,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:44:08,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:44:08,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:44:08,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:44:08,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:44:08,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:44:08,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe43dac9acec5d21450031b4b25696c02a17019cbc94a74a969e06371e0741b [2024-10-12 21:44:08,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:44:08,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:44:08,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:44:08,648 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:44:08,648 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:44:08,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2024-10-12 21:44:10,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:44:10,212 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:44:10,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2024-10-12 21:44:10,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff096ac1/ea9f5b8919774dd0963fc2fc24b14a8a/FLAGa5682c6d3 [2024-10-12 21:44:10,590 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff096ac1/ea9f5b8919774dd0963fc2fc24b14a8a [2024-10-12 21:44:10,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:44:10,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:44:10,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:44:10,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:44:10,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:44:10,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:10,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4f1216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10, skipping insertion in model container [2024-10-12 21:44:10,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:10,649 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:44:10,790 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[914,927] [2024-10-12 21:44:10,821 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[7115,7128] [2024-10-12 21:44:10,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:44:10,902 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:44:10,915 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[914,927] [2024-10-12 21:44:10,930 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[7115,7128] [2024-10-12 21:44:10,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:44:10,978 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:44:10,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10 WrapperNode [2024-10-12 21:44:10,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:44:10,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:44:10,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:44:10,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:44:10,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:10,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,043 INFO L138 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 834 [2024-10-12 21:44:11,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:44:11,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:44:11,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:44:11,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:44:11,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,062 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,086 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]. [2024-10-12 21:44:11,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:44:11,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:44:11,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:44:11,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:44:11,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (1/1) ... [2024-10-12 21:44:11,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:44:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:11,177 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) [2024-10-12 21:44:11,184 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 [2024-10-12 21:44:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:44:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-12 21:44:11,221 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-12 21:44:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-12 21:44:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-12 21:44:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-12 21:44:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-12 21:44:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-12 21:44:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-12 21:44:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-12 21:44:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-12 21:44:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-12 21:44:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-12 21:44:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-12 21:44:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-12 21:44:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-12 21:44:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-12 21:44:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-12 21:44:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-12 21:44:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-12 21:44:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-12 21:44:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-12 21:44:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-12 21:44:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:44:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-12 21:44:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-12 21:44:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-12 21:44:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-12 21:44:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:44:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:44:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-12 21:44:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-12 21:44:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-12 21:44:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-12 21:44:11,343 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:44:11,346 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:44:12,038 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-10-12 21:44:12,039 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:44:12,092 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:44:12,093 INFO L314 CfgBuilder]: Removed 15 assume(true) statements. [2024-10-12 21:44:12,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:44:12 BoogieIcfgContainer [2024-10-12 21:44:12,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:44:12,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:44:12,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:44:12,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:44:12,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:44:10" (1/3) ... [2024-10-12 21:44:12,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58265ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:44:12, skipping insertion in model container [2024-10-12 21:44:12,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:44:10" (2/3) ... [2024-10-12 21:44:12,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58265ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:44:12, skipping insertion in model container [2024-10-12 21:44:12,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:44:12" (3/3) ... [2024-10-12 21:44:12,099 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2024-10-12 21:44:12,111 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:44:12,111 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:44:12,159 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:44:12,163 INFO L333 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, 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;@42822dc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:44:12,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:44:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 355 states, 299 states have (on average 1.7023411371237458) internal successors, (509), 307 states have internal predecessors, (509), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-12 21:44:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:44:12,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:12,176 INFO L215 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] [2024-10-12 21:44:12,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:12,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1642674397, now seen corresponding path program 1 times [2024-10-12 21:44:12,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:12,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819430380] [2024-10-12 21:44:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:12,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:12,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819430380] [2024-10-12 21:44:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819430380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:12,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:12,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:44:12,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496402101] [2024-10-12 21:44:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:12,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:44:12,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:44:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:44:12,726 INFO L87 Difference]: Start difference. First operand has 355 states, 299 states have (on average 1.7023411371237458) internal successors, (509), 307 states have internal predecessors, (509), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-12 21:44:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:13,718 INFO L93 Difference]: Finished difference Result 813 states and 1329 transitions. [2024-10-12 21:44:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:44:13,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 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 58 [2024-10-12 21:44:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:13,730 INFO L225 Difference]: With dead ends: 813 [2024-10-12 21:44:13,731 INFO L226 Difference]: Without dead ends: 474 [2024-10-12 21:44:13,738 INFO L431 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 [2024-10-12 21:44:13,740 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 665 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:13,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1426 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-10-12 21:44:13,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 437. [2024-10-12 21:44:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 364 states have (on average 1.5631868131868132) internal successors, (569), 371 states have internal predecessors, (569), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2024-10-12 21:44:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 668 transitions. [2024-10-12 21:44:13,802 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 668 transitions. Word has length 58 [2024-10-12 21:44:13,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:13,802 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 668 transitions. [2024-10-12 21:44:13,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-12 21:44:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 668 transitions. [2024-10-12 21:44:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:44:13,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:13,805 INFO L215 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] [2024-10-12 21:44:13,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:44:13,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:13,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1776908061, now seen corresponding path program 1 times [2024-10-12 21:44:13,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:13,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587089312] [2024-10-12 21:44:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:13,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:13,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:13,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:13,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:13,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:13,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:13,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587089312] [2024-10-12 21:44:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587089312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:13,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:13,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:44:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538655926] [2024-10-12 21:44:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:13,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:44:13,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:44:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:44:13,958 INFO L87 Difference]: Start difference. First operand 437 states and 668 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-10-12 21:44:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:14,906 INFO L93 Difference]: Finished difference Result 757 states and 1118 transitions. [2024-10-12 21:44:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 21:44:14,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 58 [2024-10-12 21:44:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:14,910 INFO L225 Difference]: With dead ends: 757 [2024-10-12 21:44:14,910 INFO L226 Difference]: Without dead ends: 595 [2024-10-12 21:44:14,911 INFO L431 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 [2024-10-12 21:44:14,912 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 1327 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:14,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1396 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-10-12 21:44:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 525. [2024-10-12 21:44:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 432 states have (on average 1.5393518518518519) internal successors, (665), 441 states have internal predecessors, (665), 60 states have call successors, (60), 29 states have call predecessors, (60), 31 states have return successors, (69), 58 states have call predecessors, (69), 56 states have call successors, (69) [2024-10-12 21:44:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 794 transitions. [2024-10-12 21:44:14,945 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 794 transitions. Word has length 58 [2024-10-12 21:44:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:14,946 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 794 transitions. [2024-10-12 21:44:14,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-10-12 21:44:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 794 transitions. [2024-10-12 21:44:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:44:14,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:14,948 INFO L215 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] [2024-10-12 21:44:14,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:44:14,948 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:14,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:14,949 INFO L85 PathProgramCache]: Analyzing trace with hash 151364641, now seen corresponding path program 1 times [2024-10-12 21:44:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745377997] [2024-10-12 21:44:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:15,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:15,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:15,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:15,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:15,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:15,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:15,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:15,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745377997] [2024-10-12 21:44:15,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745377997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:15,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:15,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:44:15,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63064921] [2024-10-12 21:44:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:15,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:44:15,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:15,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:44:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:15,102 INFO L87 Difference]: Start difference. First operand 525 states and 794 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) [2024-10-12 21:44:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:15,969 INFO L93 Difference]: Finished difference Result 799 states and 1180 transitions. [2024-10-12 21:44:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:44:15,970 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 [2024-10-12 21:44:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:15,973 INFO L225 Difference]: With dead ends: 799 [2024-10-12 21:44:15,973 INFO L226 Difference]: Without dead ends: 555 [2024-10-12 21:44:15,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:44:15,975 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 685 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:15,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1739 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-10-12 21:44:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 529. [2024-10-12 21:44:16,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 435 states have (on average 1.5310344827586206) internal successors, (666), 444 states have internal predecessors, (666), 60 states have call successors, (60), 29 states have call predecessors, (60), 32 states have return successors, (70), 59 states have call predecessors, (70), 56 states have call successors, (70) [2024-10-12 21:44:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 796 transitions. [2024-10-12 21:44:16,010 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 796 transitions. Word has length 58 [2024-10-12 21:44:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:16,010 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 796 transitions. [2024-10-12 21:44:16,014 INFO L472 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) [2024-10-12 21:44:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 796 transitions. [2024-10-12 21:44:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:44:16,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:16,016 INFO L215 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] [2024-10-12 21:44:16,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:44:16,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:16,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2092618657, now seen corresponding path program 1 times [2024-10-12 21:44:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042868522] [2024-10-12 21:44:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:16,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:16,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042868522] [2024-10-12 21:44:16,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042868522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:16,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:16,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-12 21:44:16,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418957432] [2024-10-12 21:44:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:16,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 21:44:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 21:44:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:16,220 INFO L87 Difference]: Start difference. First operand 529 states and 796 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-12 21:44:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:17,704 INFO L93 Difference]: Finished difference Result 1753 states and 2494 transitions. [2024-10-12 21:44:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-12 21:44:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2024-10-12 21:44:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:17,713 INFO L225 Difference]: With dead ends: 1753 [2024-10-12 21:44:17,717 INFO L226 Difference]: Without dead ends: 1487 [2024-10-12 21:44:17,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 21:44:17,719 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 2798 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:17,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2812 Valid, 1883 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 21:44:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2024-10-12 21:44:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1364. [2024-10-12 21:44:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1084 states have (on average 1.419741697416974) internal successors, (1539), 1108 states have internal predecessors, (1539), 148 states have call successors, (148), 112 states have call predecessors, (148), 130 states have return successors, (184), 146 states have call predecessors, (184), 144 states have call successors, (184) [2024-10-12 21:44:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1871 transitions. [2024-10-12 21:44:17,800 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1871 transitions. Word has length 58 [2024-10-12 21:44:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:17,801 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 1871 transitions. [2024-10-12 21:44:17,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-12 21:44:17,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1871 transitions. [2024-10-12 21:44:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:44:17,801 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:17,802 INFO L215 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] [2024-10-12 21:44:17,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:44:17,802 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:17,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1187131728, now seen corresponding path program 1 times [2024-10-12 21:44:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:17,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554208811] [2024-10-12 21:44:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:17,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554208811] [2024-10-12 21:44:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554208811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:17,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:17,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:44:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225962744] [2024-10-12 21:44:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:17,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:44:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:44:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:17,942 INFO L87 Difference]: Start difference. First operand 1364 states and 1871 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) [2024-10-12 21:44:18,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:18,880 INFO L93 Difference]: Finished difference Result 2553 states and 3442 transitions. [2024-10-12 21:44:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 21:44:18,881 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 [2024-10-12 21:44:18,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:18,888 INFO L225 Difference]: With dead ends: 2553 [2024-10-12 21:44:18,888 INFO L226 Difference]: Without dead ends: 1458 [2024-10-12 21:44:18,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:18,892 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 464 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:18,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1954 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2024-10-12 21:44:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1388. [2024-10-12 21:44:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1102 states have (on average 1.4056261343012704) internal successors, (1549), 1126 states have internal predecessors, (1549), 148 states have call successors, (148), 112 states have call predecessors, (148), 136 states have return successors, (190), 152 states have call predecessors, (190), 144 states have call successors, (190) [2024-10-12 21:44:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1887 transitions. [2024-10-12 21:44:18,996 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1887 transitions. Word has length 59 [2024-10-12 21:44:18,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:18,997 INFO L471 AbstractCegarLoop]: Abstraction has 1388 states and 1887 transitions. [2024-10-12 21:44:18,997 INFO L472 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) [2024-10-12 21:44:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1887 transitions. [2024-10-12 21:44:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:44:18,998 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:18,998 INFO L215 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] [2024-10-12 21:44:18,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:44:18,999 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:18,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash 736096306, now seen corresponding path program 1 times [2024-10-12 21:44:18,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:18,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506524989] [2024-10-12 21:44:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:19,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506524989] [2024-10-12 21:44:19,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506524989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:19,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:19,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:44:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298077817] [2024-10-12 21:44:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:19,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:44:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:44:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:44:19,111 INFO L87 Difference]: Start difference. First operand 1388 states and 1887 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) [2024-10-12 21:44:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:20,088 INFO L93 Difference]: Finished difference Result 2538 states and 3329 transitions. [2024-10-12 21:44:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 21:44:20,089 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 [2024-10-12 21:44:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:20,094 INFO L225 Difference]: With dead ends: 2538 [2024-10-12 21:44:20,095 INFO L226 Difference]: Without dead ends: 1626 [2024-10-12 21:44:20,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-10-12 21:44:20,097 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 1061 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:20,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 1418 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2024-10-12 21:44:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1333. [2024-10-12 21:44:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1063 states have (on average 1.4026340545625589) internal successors, (1491), 1082 states have internal predecessors, (1491), 142 states have call successors, (142), 107 states have call predecessors, (142), 126 states have return successors, (175), 145 states have call predecessors, (175), 138 states have call successors, (175) [2024-10-12 21:44:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1808 transitions. [2024-10-12 21:44:20,157 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1808 transitions. Word has length 59 [2024-10-12 21:44:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:20,158 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 1808 transitions. [2024-10-12 21:44:20,159 INFO L472 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) [2024-10-12 21:44:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1808 transitions. [2024-10-12 21:44:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:44:20,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:20,160 INFO L215 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] [2024-10-12 21:44:20,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:44:20,161 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:20,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:20,161 INFO L85 PathProgramCache]: Analyzing trace with hash 954951024, now seen corresponding path program 1 times [2024-10-12 21:44:20,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:20,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435610690] [2024-10-12 21:44:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:20,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:20,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:20,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435610690] [2024-10-12 21:44:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435610690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:20,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:20,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104316774] [2024-10-12 21:44:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:20,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:20,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:20,261 INFO L87 Difference]: Start difference. First operand 1333 states and 1808 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) [2024-10-12 21:44:20,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:20,926 INFO L93 Difference]: Finished difference Result 3482 states and 4579 transitions. [2024-10-12 21:44:20,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 21:44:20,926 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 [2024-10-12 21:44:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:20,934 INFO L225 Difference]: With dead ends: 3482 [2024-10-12 21:44:20,934 INFO L226 Difference]: Without dead ends: 2419 [2024-10-12 21:44:20,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:44:20,937 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 1561 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:20,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 747 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:44:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2024-10-12 21:44:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2303. [2024-10-12 21:44:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1790 states have (on average 1.335195530726257) internal successors, (2390), 1826 states have internal predecessors, (2390), 261 states have call successors, (261), 206 states have call predecessors, (261), 250 states have return successors, (366), 273 states have call predecessors, (366), 257 states have call successors, (366) [2024-10-12 21:44:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3017 transitions. [2024-10-12 21:44:21,077 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3017 transitions. Word has length 59 [2024-10-12 21:44:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:21,078 INFO L471 AbstractCegarLoop]: Abstraction has 2303 states and 3017 transitions. [2024-10-12 21:44:21,078 INFO L472 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) [2024-10-12 21:44:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3017 transitions. [2024-10-12 21:44:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:44:21,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:21,078 INFO L215 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] [2024-10-12 21:44:21,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:44:21,079 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:21,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash 221499874, now seen corresponding path program 1 times [2024-10-12 21:44:21,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:21,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655622675] [2024-10-12 21:44:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:21,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:21,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:21,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:21,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:21,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:21,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:21,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:21,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:21,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655622675] [2024-10-12 21:44:21,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655622675] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:21,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:21,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:21,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428327791] [2024-10-12 21:44:21,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:21,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:21,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:21,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:21,148 INFO L87 Difference]: Start difference. First operand 2303 states and 3017 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) [2024-10-12 21:44:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:21,869 INFO L93 Difference]: Finished difference Result 5355 states and 6898 transitions. [2024-10-12 21:44:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:44:21,869 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 [2024-10-12 21:44:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:21,883 INFO L225 Difference]: With dead ends: 5355 [2024-10-12 21:44:21,883 INFO L226 Difference]: Without dead ends: 3327 [2024-10-12 21:44:21,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:21,888 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 899 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:21,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 951 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:44:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2024-10-12 21:44:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3069. [2024-10-12 21:44:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 2370 states have (on average 1.3151898734177214) internal successors, (3117), 2411 states have internal predecessors, (3117), 353 states have call successors, (353), 286 states have call predecessors, (353), 344 states have return successors, (480), 374 states have call predecessors, (480), 349 states have call successors, (480) [2024-10-12 21:44:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 3950 transitions. [2024-10-12 21:44:22,132 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 3950 transitions. Word has length 60 [2024-10-12 21:44:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:22,133 INFO L471 AbstractCegarLoop]: Abstraction has 3069 states and 3950 transitions. [2024-10-12 21:44:22,133 INFO L472 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) [2024-10-12 21:44:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 3950 transitions. [2024-10-12 21:44:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-12 21:44:22,134 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:22,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:22,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:44:22,135 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:22,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1574263521, now seen corresponding path program 1 times [2024-10-12 21:44:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118845065] [2024-10-12 21:44:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:22,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118845065] [2024-10-12 21:44:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118845065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:22,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:22,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:22,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813216469] [2024-10-12 21:44:22,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:22,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:22,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:22,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:22,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:22,203 INFO L87 Difference]: Start difference. First operand 3069 states and 3950 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-12 21:44:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:22,897 INFO L93 Difference]: Finished difference Result 6633 states and 8416 transitions. [2024-10-12 21:44:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:44:22,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 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 66 [2024-10-12 21:44:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:22,912 INFO L225 Difference]: With dead ends: 6633 [2024-10-12 21:44:22,912 INFO L226 Difference]: Without dead ends: 3837 [2024-10-12 21:44:22,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:22,917 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 1007 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:22,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1014 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:44:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2024-10-12 21:44:23,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3573. [2024-10-12 21:44:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3573 states, 2760 states have (on average 1.3068840579710146) internal successors, (3607), 2805 states have internal predecessors, (3607), 409 states have call successors, (409), 336 states have call predecessors, (409), 402 states have return successors, (553), 434 states have call predecessors, (553), 405 states have call successors, (553) [2024-10-12 21:44:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4569 transitions. [2024-10-12 21:44:23,138 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4569 transitions. Word has length 66 [2024-10-12 21:44:23,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:23,138 INFO L471 AbstractCegarLoop]: Abstraction has 3573 states and 4569 transitions. [2024-10-12 21:44:23,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-12 21:44:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4569 transitions. [2024-10-12 21:44:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 21:44:23,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:23,139 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:23,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:44:23,140 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:23,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1040856206, now seen corresponding path program 1 times [2024-10-12 21:44:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950170421] [2024-10-12 21:44:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:23,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:23,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:23,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:23,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:23,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:23,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:23,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950170421] [2024-10-12 21:44:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950170421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:23,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018439954] [2024-10-12 21:44:23,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:23,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:23,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:23,219 INFO L87 Difference]: Start difference. First operand 3573 states and 4569 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:44:24,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:24,023 INFO L93 Difference]: Finished difference Result 4581 states and 5786 transitions. [2024-10-12 21:44:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:44:24,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2024-10-12 21:44:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:24,040 INFO L225 Difference]: With dead ends: 4581 [2024-10-12 21:44:24,040 INFO L226 Difference]: Without dead ends: 4578 [2024-10-12 21:44:24,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:44:24,041 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 1773 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:24,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 764 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:44:24,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2024-10-12 21:44:24,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3993. [2024-10-12 21:44:24,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3993 states, 3073 states have (on average 1.2954767328343637) internal successors, (3981), 3121 states have internal predecessors, (3981), 459 states have call successors, (459), 380 states have call predecessors, (459), 459 states have return successors, (630), 494 states have call predecessors, (630), 456 states have call successors, (630) [2024-10-12 21:44:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 5070 transitions. [2024-10-12 21:44:24,359 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 5070 transitions. Word has length 67 [2024-10-12 21:44:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:24,360 INFO L471 AbstractCegarLoop]: Abstraction has 3993 states and 5070 transitions. [2024-10-12 21:44:24,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:44:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 5070 transitions. [2024-10-12 21:44:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-12 21:44:24,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:24,361 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:24,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:44:24,362 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:24,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:24,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2094372661, now seen corresponding path program 1 times [2024-10-12 21:44:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:24,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233206470] [2024-10-12 21:44:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:24,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:24,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233206470] [2024-10-12 21:44:24,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233206470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919122194] [2024-10-12 21:44:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:24,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:24,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:24,488 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) [2024-10-12 21:44:24,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:44:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:24,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 21:44:24,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:24,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:44:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919122194] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:44:24,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:44:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-10-12 21:44:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185303762] [2024-10-12 21:44:24,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:44:24,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 21:44:24,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:24,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 21:44:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:24,867 INFO L87 Difference]: Start difference. First operand 3993 states and 5070 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-12 21:44:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:26,706 INFO L93 Difference]: Finished difference Result 7965 states and 9933 transitions. [2024-10-12 21:44:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 21:44:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2024-10-12 21:44:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:26,732 INFO L225 Difference]: With dead ends: 7965 [2024-10-12 21:44:26,732 INFO L226 Difference]: Without dead ends: 7962 [2024-10-12 21:44:26,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-10-12 21:44:26,735 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 1457 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:26,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1997 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 21:44:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7962 states. [2024-10-12 21:44:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7962 to 7110. [2024-10-12 21:44:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7110 states, 5448 states have (on average 1.2782672540381792) internal successors, (6964), 5531 states have internal predecessors, (6964), 818 states have call successors, (818), 694 states have call predecessors, (818), 842 states have return successors, (1131), 887 states have call predecessors, (1131), 815 states have call successors, (1131) [2024-10-12 21:44:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7110 states to 7110 states and 8913 transitions. [2024-10-12 21:44:27,464 INFO L78 Accepts]: Start accepts. Automaton has 7110 states and 8913 transitions. Word has length 68 [2024-10-12 21:44:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:27,465 INFO L471 AbstractCegarLoop]: Abstraction has 7110 states and 8913 transitions. [2024-10-12 21:44:27,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-12 21:44:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 7110 states and 8913 transitions. [2024-10-12 21:44:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 21:44:27,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:27,466 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:27,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 21:44:27,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 21:44:27,667 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:27,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1832774066, now seen corresponding path program 2 times [2024-10-12 21:44:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678353544] [2024-10-12 21:44:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:27,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:27,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678353544] [2024-10-12 21:44:27,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678353544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:27,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:27,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:27,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817755141] [2024-10-12 21:44:27,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:27,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:27,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:27,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:27,712 INFO L87 Difference]: Start difference. First operand 7110 states and 8913 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:44:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:28,619 INFO L93 Difference]: Finished difference Result 9498 states and 11916 transitions. [2024-10-12 21:44:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 21:44:28,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-10-12 21:44:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:28,650 INFO L225 Difference]: With dead ends: 9498 [2024-10-12 21:44:28,650 INFO L226 Difference]: Without dead ends: 3860 [2024-10-12 21:44:28,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:28,670 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 955 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:28,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1053 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:44:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2024-10-12 21:44:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 2924. [2024-10-12 21:44:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2268 states have (on average 1.2861552028218695) internal successors, (2917), 2297 states have internal predecessors, (2917), 337 states have call successors, (337), 276 states have call predecessors, (337), 317 states have return successors, (430), 353 states have call predecessors, (430), 334 states have call successors, (430) [2024-10-12 21:44:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3684 transitions. [2024-10-12 21:44:29,005 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3684 transitions. Word has length 71 [2024-10-12 21:44:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:29,010 INFO L471 AbstractCegarLoop]: Abstraction has 2924 states and 3684 transitions. [2024-10-12 21:44:29,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:44:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3684 transitions. [2024-10-12 21:44:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 21:44:29,013 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:29,014 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:29,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:44:29,014 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:29,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash -760462493, now seen corresponding path program 1 times [2024-10-12 21:44:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:29,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344159001] [2024-10-12 21:44:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:29,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:44:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:44:29,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344159001] [2024-10-12 21:44:29,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344159001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:29,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:29,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:44:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223840882] [2024-10-12 21:44:29,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:29,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:44:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:29,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:44:29,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:44:29,166 INFO L87 Difference]: Start difference. First operand 2924 states and 3684 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:30,384 INFO L93 Difference]: Finished difference Result 8242 states and 10215 transitions. [2024-10-12 21:44:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 21:44:30,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-10-12 21:44:30,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:30,397 INFO L225 Difference]: With dead ends: 8242 [2024-10-12 21:44:30,397 INFO L226 Difference]: Without dead ends: 4852 [2024-10-12 21:44:30,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-12 21:44:30,402 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 1198 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:30,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 1268 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4852 states. [2024-10-12 21:44:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 4592. [2024-10-12 21:44:30,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 3501 states have (on average 1.2479291630962581) internal successors, (4369), 3567 states have internal predecessors, (4369), 537 states have call successors, (537), 448 states have call predecessors, (537), 552 states have return successors, (780), 579 states have call predecessors, (780), 534 states have call successors, (780) [2024-10-12 21:44:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 5686 transitions. [2024-10-12 21:44:30,724 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 5686 transitions. Word has length 76 [2024-10-12 21:44:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:30,725 INFO L471 AbstractCegarLoop]: Abstraction has 4592 states and 5686 transitions. [2024-10-12 21:44:30,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:30,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 5686 transitions. [2024-10-12 21:44:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 21:44:30,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:30,727 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:30,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:44:30,727 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:30,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1653971837, now seen corresponding path program 1 times [2024-10-12 21:44:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:30,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994252959] [2024-10-12 21:44:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:44:30,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:30,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994252959] [2024-10-12 21:44:30,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994252959] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:30,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:30,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:44:30,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291168341] [2024-10-12 21:44:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:30,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:44:30,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:44:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:30,821 INFO L87 Difference]: Start difference. First operand 4592 states and 5686 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:32,313 INFO L93 Difference]: Finished difference Result 7682 states and 9434 transitions. [2024-10-12 21:44:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 21:44:32,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-10-12 21:44:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:32,327 INFO L225 Difference]: With dead ends: 7682 [2024-10-12 21:44:32,327 INFO L226 Difference]: Without dead ends: 3839 [2024-10-12 21:44:32,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2024-10-12 21:44:32,335 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 2185 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:32,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 1263 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:32,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2024-10-12 21:44:32,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3435. [2024-10-12 21:44:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 2610 states have (on average 1.236015325670498) internal successors, (3226), 2664 states have internal predecessors, (3226), 402 states have call successors, (402), 330 states have call predecessors, (402), 421 states have return successors, (549), 443 states have call predecessors, (549), 399 states have call successors, (549) [2024-10-12 21:44:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4177 transitions. [2024-10-12 21:44:32,756 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4177 transitions. Word has length 86 [2024-10-12 21:44:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:32,757 INFO L471 AbstractCegarLoop]: Abstraction has 3435 states and 4177 transitions. [2024-10-12 21:44:32,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4177 transitions. [2024-10-12 21:44:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 21:44:32,763 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:32,763 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:32,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:44:32,763 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:32,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash -879376531, now seen corresponding path program 1 times [2024-10-12 21:44:32,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:32,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102380160] [2024-10-12 21:44:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:32,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:44:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 21:44:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 21:44:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-12 21:44:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-12 21:44:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-12 21:44:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-12 21:44:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-12 21:44:32,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:32,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102380160] [2024-10-12 21:44:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102380160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175613443] [2024-10-12 21:44:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:32,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:32,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:32,907 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) [2024-10-12 21:44:32,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:44:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:33,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 21:44:33,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 21:44:33,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:44:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175613443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:44:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-10-12 21:44:33,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192006850] [2024-10-12 21:44:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:33,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:33,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:44:33,056 INFO L87 Difference]: Start difference. First operand 3435 states and 4177 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-12 21:44:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:33,255 INFO L93 Difference]: Finished difference Result 5026 states and 6085 transitions. [2024-10-12 21:44:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:44:33,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2024-10-12 21:44:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:33,263 INFO L225 Difference]: With dead ends: 5026 [2024-10-12 21:44:33,263 INFO L226 Difference]: Without dead ends: 1866 [2024-10-12 21:44:33,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:44:33,269 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 0 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:33,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2488 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:44:33,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2024-10-12 21:44:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1866. [2024-10-12 21:44:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1487 states have (on average 1.2595830531271015) internal successors, (1873), 1504 states have internal predecessors, (1873), 191 states have call successors, (191), 144 states have call predecessors, (191), 186 states have return successors, (256), 218 states have call predecessors, (256), 188 states have call successors, (256) [2024-10-12 21:44:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2320 transitions. [2024-10-12 21:44:33,385 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2320 transitions. Word has length 131 [2024-10-12 21:44:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:33,385 INFO L471 AbstractCegarLoop]: Abstraction has 1866 states and 2320 transitions. [2024-10-12 21:44:33,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-12 21:44:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2320 transitions. [2024-10-12 21:44:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:33,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:33,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:33,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 21:44:33,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 21:44:33,593 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:33,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash 550923923, now seen corresponding path program 1 times [2024-10-12 21:44:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:33,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050877743] [2024-10-12 21:44:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:33,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:33,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:33,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:33,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:33,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050877743] [2024-10-12 21:44:33,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050877743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:33,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:33,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:44:33,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780549459] [2024-10-12 21:44:33,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:33,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:44:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:44:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:44:33,694 INFO L87 Difference]: Start difference. First operand 1866 states and 2320 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:35,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:35,052 INFO L93 Difference]: Finished difference Result 2208 states and 2885 transitions. [2024-10-12 21:44:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:35,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:35,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:35,058 INFO L225 Difference]: With dead ends: 2208 [2024-10-12 21:44:35,058 INFO L226 Difference]: Without dead ends: 1956 [2024-10-12 21:44:35,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:35,060 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 796 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:35,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 695 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:44:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2024-10-12 21:44:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1866. [2024-10-12 21:44:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1487 states have (on average 1.2589105581708138) internal successors, (1872), 1504 states have internal predecessors, (1872), 191 states have call successors, (191), 144 states have call predecessors, (191), 186 states have return successors, (256), 218 states have call predecessors, (256), 188 states have call successors, (256) [2024-10-12 21:44:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2319 transitions. [2024-10-12 21:44:35,277 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2319 transitions. Word has length 122 [2024-10-12 21:44:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:35,277 INFO L471 AbstractCegarLoop]: Abstraction has 1866 states and 2319 transitions. [2024-10-12 21:44:35,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2319 transitions. [2024-10-12 21:44:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:35,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:35,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:35,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 21:44:35,280 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:35,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2096680431, now seen corresponding path program 1 times [2024-10-12 21:44:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872208791] [2024-10-12 21:44:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:35,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872208791] [2024-10-12 21:44:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872208791] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:35,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:35,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042401076] [2024-10-12 21:44:35,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:35,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:35,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:35,416 INFO L87 Difference]: Start difference. First operand 1866 states and 2319 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:37,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:37,284 INFO L93 Difference]: Finished difference Result 2551 states and 3453 transitions. [2024-10-12 21:44:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:44:37,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:37,290 INFO L225 Difference]: With dead ends: 2551 [2024-10-12 21:44:37,290 INFO L226 Difference]: Without dead ends: 2304 [2024-10-12 21:44:37,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:37,292 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 1257 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:37,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1007 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 21:44:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2024-10-12 21:44:37,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2123. [2024-10-12 21:44:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 1720 states have (on average 1.3104651162790697) internal successors, (2254), 1738 states have internal predecessors, (2254), 208 states have call successors, (208), 150 states have call predecessors, (208), 193 states have return successors, (276), 235 states have call predecessors, (276), 205 states have call successors, (276) [2024-10-12 21:44:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2738 transitions. [2024-10-12 21:44:37,513 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2738 transitions. Word has length 122 [2024-10-12 21:44:37,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:37,513 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 2738 transitions. [2024-10-12 21:44:37,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2738 transitions. [2024-10-12 21:44:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:37,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:37,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:37,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 21:44:37,516 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:37,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1922361553, now seen corresponding path program 1 times [2024-10-12 21:44:37,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:37,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99590019] [2024-10-12 21:44:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:37,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:37,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:37,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99590019] [2024-10-12 21:44:37,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99590019] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:37,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:37,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:37,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245119493] [2024-10-12 21:44:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:37,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:37,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:37,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:37,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:37,721 INFO L87 Difference]: Start difference. First operand 2123 states and 2738 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:40,388 INFO L93 Difference]: Finished difference Result 3166 states and 4463 transitions. [2024-10-12 21:44:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:44:40,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:40,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:40,396 INFO L225 Difference]: With dead ends: 3166 [2024-10-12 21:44:40,396 INFO L226 Difference]: Without dead ends: 2662 [2024-10-12 21:44:40,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:44:40,398 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 1274 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 2996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:40,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1792 Invalid, 2996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 21:44:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2024-10-12 21:44:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2361. [2024-10-12 21:44:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 1934 states have (on average 1.343329886246122) internal successors, (2598), 1953 states have internal predecessors, (2598), 225 states have call successors, (225), 156 states have call predecessors, (225), 200 states have return successors, (295), 253 states have call predecessors, (295), 222 states have call successors, (295) [2024-10-12 21:44:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 3118 transitions. [2024-10-12 21:44:40,636 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 3118 transitions. Word has length 122 [2024-10-12 21:44:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:40,636 INFO L471 AbstractCegarLoop]: Abstraction has 2361 states and 3118 transitions. [2024-10-12 21:44:40,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 3118 transitions. [2024-10-12 21:44:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:40,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:40,639 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:40,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 21:44:40,640 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:40,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:40,640 INFO L85 PathProgramCache]: Analyzing trace with hash -983311729, now seen corresponding path program 1 times [2024-10-12 21:44:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891923697] [2024-10-12 21:44:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:40,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:40,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:40,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:40,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:40,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891923697] [2024-10-12 21:44:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891923697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294048341] [2024-10-12 21:44:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:40,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:40,778 INFO L87 Difference]: Start difference. First operand 2361 states and 3118 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:43,238 INFO L93 Difference]: Finished difference Result 4067 states and 5935 transitions. [2024-10-12 21:44:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:44:43,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:43,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:43,250 INFO L225 Difference]: With dead ends: 4067 [2024-10-12 21:44:43,250 INFO L226 Difference]: Without dead ends: 3325 [2024-10-12 21:44:43,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:44:43,254 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 1278 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:43,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1790 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 21:44:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2024-10-12 21:44:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 2838. [2024-10-12 21:44:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2363 states have (on average 1.3910283537875583) internal successors, (3287), 2384 states have internal predecessors, (3287), 259 states have call successors, (259), 168 states have call predecessors, (259), 214 states have return successors, (337), 289 states have call predecessors, (337), 256 states have call successors, (337) [2024-10-12 21:44:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3883 transitions. [2024-10-12 21:44:43,812 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3883 transitions. Word has length 122 [2024-10-12 21:44:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:43,815 INFO L471 AbstractCegarLoop]: Abstraction has 2838 states and 3883 transitions. [2024-10-12 21:44:43,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3883 transitions. [2024-10-12 21:44:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:43,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:43,822 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:43,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 21:44:43,822 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:43,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:43,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1278261521, now seen corresponding path program 1 times [2024-10-12 21:44:43,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:43,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941564504] [2024-10-12 21:44:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:43,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:43,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:43,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:43,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:43,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:43,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:43,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:43,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941564504] [2024-10-12 21:44:43,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941564504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:43,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:43,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:43,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195573624] [2024-10-12 21:44:43,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:43,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:43,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:43,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:43,948 INFO L87 Difference]: Start difference. First operand 2838 states and 3883 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:45,543 INFO L93 Difference]: Finished difference Result 4528 states and 6683 transitions. [2024-10-12 21:44:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:45,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:45,555 INFO L225 Difference]: With dead ends: 4528 [2024-10-12 21:44:45,555 INFO L226 Difference]: Without dead ends: 3309 [2024-10-12 21:44:45,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:45,559 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 1140 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:45,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 850 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:44:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2024-10-12 21:44:45,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 2838. [2024-10-12 21:44:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2363 states have (on average 1.388912399492171) internal successors, (3282), 2384 states have internal predecessors, (3282), 259 states have call successors, (259), 168 states have call predecessors, (259), 214 states have return successors, (337), 289 states have call predecessors, (337), 256 states have call successors, (337) [2024-10-12 21:44:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3878 transitions. [2024-10-12 21:44:45,858 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3878 transitions. Word has length 122 [2024-10-12 21:44:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:45,859 INFO L471 AbstractCegarLoop]: Abstraction has 2838 states and 3878 transitions. [2024-10-12 21:44:45,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3878 transitions. [2024-10-12 21:44:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:45,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:45,862 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:45,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 21:44:45,862 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:45,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -28880877, now seen corresponding path program 1 times [2024-10-12 21:44:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:45,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503532276] [2024-10-12 21:44:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:45,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:45,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:45,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:45,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:45,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:45,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:45,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503532276] [2024-10-12 21:44:45,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503532276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:45,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:45,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:45,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886924972] [2024-10-12 21:44:45,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:45,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:45,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:45,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:45,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:45,984 INFO L87 Difference]: Start difference. First operand 2838 states and 3878 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:47,462 INFO L93 Difference]: Finished difference Result 4522 states and 6656 transitions. [2024-10-12 21:44:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:47,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:47,471 INFO L225 Difference]: With dead ends: 4522 [2024-10-12 21:44:47,471 INFO L226 Difference]: Without dead ends: 3303 [2024-10-12 21:44:47,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:47,475 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 982 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:47,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1022 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:44:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2024-10-12 21:44:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2838. [2024-10-12 21:44:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2363 states have (on average 1.3867964451967838) internal successors, (3277), 2384 states have internal predecessors, (3277), 259 states have call successors, (259), 168 states have call predecessors, (259), 214 states have return successors, (337), 289 states have call predecessors, (337), 256 states have call successors, (337) [2024-10-12 21:44:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3873 transitions. [2024-10-12 21:44:47,762 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3873 transitions. Word has length 122 [2024-10-12 21:44:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:47,763 INFO L471 AbstractCegarLoop]: Abstraction has 2838 states and 3873 transitions. [2024-10-12 21:44:47,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:47,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3873 transitions. [2024-10-12 21:44:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:47,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:47,765 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:47,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 21:44:47,765 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:47,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1868615889, now seen corresponding path program 1 times [2024-10-12 21:44:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:47,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690049271] [2024-10-12 21:44:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690049271] [2024-10-12 21:44:47,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690049271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:47,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:47,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976599004] [2024-10-12 21:44:47,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:47,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:47,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:47,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:47,910 INFO L87 Difference]: Start difference. First operand 2838 states and 3873 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:50,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:50,534 INFO L93 Difference]: Finished difference Result 5781 states and 8672 transitions. [2024-10-12 21:44:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:44:50,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:50,547 INFO L225 Difference]: With dead ends: 5781 [2024-10-12 21:44:50,547 INFO L226 Difference]: Without dead ends: 4562 [2024-10-12 21:44:50,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:44:50,551 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 1260 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:50,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1790 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 21:44:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2024-10-12 21:44:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 3808. [2024-10-12 21:44:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3808 states, 3237 states have (on average 1.4423849243126352) internal successors, (4669), 3262 states have internal predecessors, (4669), 327 states have call successors, (327), 192 states have call predecessors, (327), 242 states have return successors, (427), 361 states have call predecessors, (427), 324 states have call successors, (427) [2024-10-12 21:44:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 5423 transitions. [2024-10-12 21:44:50,893 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 5423 transitions. Word has length 122 [2024-10-12 21:44:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:50,893 INFO L471 AbstractCegarLoop]: Abstraction has 3808 states and 5423 transitions. [2024-10-12 21:44:50,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 5423 transitions. [2024-10-12 21:44:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:50,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:50,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:50,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 21:44:50,897 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:50,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:50,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1395310509, now seen corresponding path program 1 times [2024-10-12 21:44:50,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:50,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092067892] [2024-10-12 21:44:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:50,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:50,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:50,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:50,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:51,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:51,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092067892] [2024-10-12 21:44:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092067892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:51,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:51,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662886329] [2024-10-12 21:44:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:51,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:51,011 INFO L87 Difference]: Start difference. First operand 3808 states and 5423 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:52,488 INFO L93 Difference]: Finished difference Result 6758 states and 10263 transitions. [2024-10-12 21:44:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:52,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:52,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:52,501 INFO L225 Difference]: With dead ends: 6758 [2024-10-12 21:44:52,501 INFO L226 Difference]: Without dead ends: 4569 [2024-10-12 21:44:52,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:52,506 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 981 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:52,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1022 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:44:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4569 states. [2024-10-12 21:44:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4569 to 3808. [2024-10-12 21:44:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3808 states, 3237 states have (on average 1.4396045721346926) internal successors, (4660), 3262 states have internal predecessors, (4660), 327 states have call successors, (327), 192 states have call predecessors, (327), 242 states have return successors, (427), 361 states have call predecessors, (427), 324 states have call successors, (427) [2024-10-12 21:44:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 5414 transitions. [2024-10-12 21:44:52,860 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 5414 transitions. Word has length 122 [2024-10-12 21:44:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:52,860 INFO L471 AbstractCegarLoop]: Abstraction has 3808 states and 5414 transitions. [2024-10-12 21:44:52,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 5414 transitions. [2024-10-12 21:44:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:52,863 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:52,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:52,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 21:44:52,863 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:52,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash 993253521, now seen corresponding path program 1 times [2024-10-12 21:44:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:52,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433687270] [2024-10-12 21:44:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:52,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:52,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:53,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:53,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:53,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:53,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:53,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433687270] [2024-10-12 21:44:53,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433687270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:53,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:53,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472887880] [2024-10-12 21:44:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:53,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:53,056 INFO L87 Difference]: Start difference. First operand 3808 states and 5414 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:55,692 INFO L93 Difference]: Finished difference Result 9235 states and 14216 transitions. [2024-10-12 21:44:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:44:55,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:55,711 INFO L225 Difference]: With dead ends: 9235 [2024-10-12 21:44:55,712 INFO L226 Difference]: Without dead ends: 7046 [2024-10-12 21:44:55,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:44:55,719 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 1252 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:55,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1790 Invalid, 2873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 21:44:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7046 states. [2024-10-12 21:44:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7046 to 5758. [2024-10-12 21:44:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5758 states, 4995 states have (on average 1.4902902902902904) internal successors, (7444), 5028 states have internal predecessors, (7444), 463 states have call successors, (463), 240 states have call predecessors, (463), 298 states have return successors, (625), 505 states have call predecessors, (625), 460 states have call successors, (625) [2024-10-12 21:44:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5758 states to 5758 states and 8532 transitions. [2024-10-12 21:44:56,240 INFO L78 Accepts]: Start accepts. Automaton has 5758 states and 8532 transitions. Word has length 122 [2024-10-12 21:44:56,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:56,240 INFO L471 AbstractCegarLoop]: Abstraction has 5758 states and 8532 transitions. [2024-10-12 21:44:56,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5758 states and 8532 transitions. [2024-10-12 21:44:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:44:56,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:56,244 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:56,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 21:44:56,244 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:56,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1700642669, now seen corresponding path program 1 times [2024-10-12 21:44:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735348202] [2024-10-12 21:44:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:44:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:44:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:44:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:44:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735348202] [2024-10-12 21:44:56,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735348202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:56,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:56,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:56,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164764018] [2024-10-12 21:44:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:56,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:56,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:56,375 INFO L87 Difference]: Start difference. First operand 5758 states and 8532 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:59,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:59,462 INFO L93 Difference]: Finished difference Result 17823 states and 28110 transitions. [2024-10-12 21:44:59,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:44:59,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:44:59,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:59,499 INFO L225 Difference]: With dead ends: 17823 [2024-10-12 21:44:59,499 INFO L226 Difference]: Without dead ends: 13684 [2024-10-12 21:44:59,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:59,512 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 1325 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 3247 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:59,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 1783 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3247 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 21:44:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13684 states. [2024-10-12 21:45:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13684 to 9639. [2024-10-12 21:45:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9639 states, 8508 states have (on average 1.5296191819464033) internal successors, (13014), 8557 states have internal predecessors, (13014), 719 states have call successors, (719), 336 states have call predecessors, (719), 410 states have return successors, (1059), 777 states have call predecessors, (1059), 716 states have call successors, (1059) [2024-10-12 21:45:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9639 states to 9639 states and 14792 transitions. [2024-10-12 21:45:00,255 INFO L78 Accepts]: Start accepts. Automaton has 9639 states and 14792 transitions. Word has length 122 [2024-10-12 21:45:00,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:45:00,256 INFO L471 AbstractCegarLoop]: Abstraction has 9639 states and 14792 transitions. [2024-10-12 21:45:00,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:00,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9639 states and 14792 transitions. [2024-10-12 21:45:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:45:00,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:45:00,261 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:45:00,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 21:45:00,261 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:45:00,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:45:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1537593425, now seen corresponding path program 1 times [2024-10-12 21:45:00,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:45:00,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741498287] [2024-10-12 21:45:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:45:00,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:45:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:00,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:45:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:00,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:45:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:00,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:45:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:00,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:45:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:00,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:45:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:45:00,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:45:00,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741498287] [2024-10-12 21:45:00,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741498287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:45:00,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:45:00,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:45:00,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818402056] [2024-10-12 21:45:00,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:45:00,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:45:00,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:45:00,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:45:00,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:45:00,416 INFO L87 Difference]: Start difference. First operand 9639 states and 14792 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:45:04,238 INFO L93 Difference]: Finished difference Result 32886 states and 52692 transitions. [2024-10-12 21:45:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:45:04,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:45:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:45:04,301 INFO L225 Difference]: With dead ends: 32886 [2024-10-12 21:45:04,302 INFO L226 Difference]: Without dead ends: 24866 [2024-10-12 21:45:04,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:45:04,323 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 1514 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:45:04,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 1779 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 21:45:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24866 states. [2024-10-12 21:45:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24866 to 17080. [2024-10-12 21:45:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17080 states, 15229 states have (on average 1.5502002757896118) internal successors, (23608), 15310 states have internal predecessors, (23608), 1215 states have call successors, (1215), 528 states have call predecessors, (1215), 634 states have return successors, (2073), 1305 states have call predecessors, (2073), 1212 states have call successors, (2073) [2024-10-12 21:45:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17080 states to 17080 states and 26896 transitions. [2024-10-12 21:45:05,572 INFO L78 Accepts]: Start accepts. Automaton has 17080 states and 26896 transitions. Word has length 122 [2024-10-12 21:45:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:45:05,573 INFO L471 AbstractCegarLoop]: Abstraction has 17080 states and 26896 transitions. [2024-10-12 21:45:05,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 17080 states and 26896 transitions. [2024-10-12 21:45:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:45:05,581 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:45:05,581 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:45:05,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 21:45:05,581 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:45:05,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:45:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1405988653, now seen corresponding path program 1 times [2024-10-12 21:45:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:45:05,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776301605] [2024-10-12 21:45:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:45:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:45:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:05,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:45:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:05,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:45:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:05,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:45:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:05,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:45:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:05,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:45:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:45:05,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:45:05,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776301605] [2024-10-12 21:45:05,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776301605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:45:05,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:45:05,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:45:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306946581] [2024-10-12 21:45:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:45:05,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:45:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:45:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:45:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:45:05,782 INFO L87 Difference]: Start difference. First operand 17080 states and 26896 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:45:10,947 INFO L93 Difference]: Finished difference Result 60771 states and 98662 transitions. [2024-10-12 21:45:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:45:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:45:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:45:11,065 INFO L225 Difference]: With dead ends: 60771 [2024-10-12 21:45:11,065 INFO L226 Difference]: Without dead ends: 45310 [2024-10-12 21:45:11,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:45:11,104 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 1440 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:45:11,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1783 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 21:45:11,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45310 states. [2024-10-12 21:45:13,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45310 to 32346. [2024-10-12 21:45:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32346 states, 29087 states have (on average 1.5664729948086775) internal successors, (45564), 29232 states have internal predecessors, (45564), 2175 states have call successors, (2175), 912 states have call predecessors, (2175), 1082 states have return successors, (4555), 2329 states have call predecessors, (4555), 2172 states have call successors, (4555) [2024-10-12 21:45:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32346 states to 32346 states and 52294 transitions. [2024-10-12 21:45:14,074 INFO L78 Accepts]: Start accepts. Automaton has 32346 states and 52294 transitions. Word has length 122 [2024-10-12 21:45:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:45:14,075 INFO L471 AbstractCegarLoop]: Abstraction has 32346 states and 52294 transitions. [2024-10-12 21:45:14,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 32346 states and 52294 transitions. [2024-10-12 21:45:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:45:14,088 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:45:14,088 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:45:14,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 21:45:14,088 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:45:14,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:45:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2005469653, now seen corresponding path program 1 times [2024-10-12 21:45:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:45:14,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198799229] [2024-10-12 21:45:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:45:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:45:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:14,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:45:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:14,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:45:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:14,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:45:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:14,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:45:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:14,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:45:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:45:14,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:45:14,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198799229] [2024-10-12 21:45:14,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198799229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:45:14,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:45:14,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:45:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714512479] [2024-10-12 21:45:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:45:14,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:45:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:45:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:45:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:45:14,354 INFO L87 Difference]: Start difference. First operand 32346 states and 52294 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:45:23,159 INFO L93 Difference]: Finished difference Result 117379 states and 193966 transitions. [2024-10-12 21:45:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:45:23,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:45:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:45:23,409 INFO L225 Difference]: With dead ends: 117379 [2024-10-12 21:45:23,409 INFO L226 Difference]: Without dead ends: 86652 [2024-10-12 21:45:23,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:45:23,484 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 1404 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:45:23,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 1783 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 21:45:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86652 states. [2024-10-12 21:45:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86652 to 62875. [2024-10-12 21:45:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62875 states, 56864 states have (on average 1.575654192459201) internal successors, (89598), 57137 states have internal predecessors, (89598), 4031 states have call successors, (4031), 1680 states have call predecessors, (4031), 1978 states have return successors, (10913), 4313 states have call predecessors, (10913), 4028 states have call successors, (10913) [2024-10-12 21:45:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62875 states to 62875 states and 104542 transitions. [2024-10-12 21:45:28,254 INFO L78 Accepts]: Start accepts. Automaton has 62875 states and 104542 transitions. Word has length 122 [2024-10-12 21:45:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:45:28,255 INFO L471 AbstractCegarLoop]: Abstraction has 62875 states and 104542 transitions. [2024-10-12 21:45:28,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 62875 states and 104542 transitions. [2024-10-12 21:45:28,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 21:45:28,291 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:45:28,291 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:45:28,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 21:45:28,292 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:45:28,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:45:28,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1976969363, now seen corresponding path program 1 times [2024-10-12 21:45:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:45:28,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748171070] [2024-10-12 21:45:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:45:28,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:45:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:28,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:45:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:28,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 21:45:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:28,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-12 21:45:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:28,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 21:45:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:28,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-12 21:45:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:45:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:45:28,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748171070] [2024-10-12 21:45:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748171070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:45:28,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:45:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:45:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420323212] [2024-10-12 21:45:28,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:45:28,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:45:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:45:28,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:45:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:45:28,441 INFO L87 Difference]: Start difference. First operand 62875 states and 104542 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:45:35,880 INFO L93 Difference]: Finished difference Result 140710 states and 240694 transitions. [2024-10-12 21:45:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:45:35,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2024-10-12 21:45:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:45:36,329 INFO L225 Difference]: With dead ends: 140710 [2024-10-12 21:45:36,329 INFO L226 Difference]: Without dead ends: 79454 [2024-10-12 21:45:36,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:45:36,433 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 1142 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:45:36,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 849 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:45:36,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79454 states.