./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.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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.13.cil-1.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 ce176716d91d866602a372020396224af9fcf4c5f81c6adcdcc0f1d83b0d658f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 03:03:47,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 03:03:47,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 03:03:47,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 03:03:47,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 03:03:47,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 03:03:47,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 03:03:47,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 03:03:47,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 03:03:47,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 03:03:47,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 03:03:47,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 03:03:47,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 03:03:47,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 03:03:47,616 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 03:03:47,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 03:03:47,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 03:03:47,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 03:03:47,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 03:03:47,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 03:03:47,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 03:03:47,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 03:03:47,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 03:03:47,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 03:03:47,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 03:03:47,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 03:03:47,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 03:03:47,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 03:03:47,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 03:03:47,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 03:03:47,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 03:03:47,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 03:03:47,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 03:03:47,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 03:03:47,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 03:03:47,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 03:03:47,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 03:03:47,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 03:03:47,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 03:03:47,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 03:03:47,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 03:03:47,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 03:03:47,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce176716d91d866602a372020396224af9fcf4c5f81c6adcdcc0f1d83b0d658f [2024-10-24 03:03:47,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 03:03:47,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 03:03:47,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 03:03:47,891 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 03:03:47,892 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 03:03:47,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-10-24 03:03:49,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 03:03:49,649 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 03:03:49,650 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-10-24 03:03:49,667 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c35c4c1f/a6113865002342ea9cb335948fa36fc3/FLAG400039a28 [2024-10-24 03:03:49,680 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c35c4c1f/a6113865002342ea9cb335948fa36fc3 [2024-10-24 03:03:49,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 03:03:49,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 03:03:49,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 03:03:49,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 03:03:49,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 03:03:49,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:49" (1/1) ... [2024-10-24 03:03:49,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe227ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:49, skipping insertion in model container [2024-10-24 03:03:49,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:49" (1/1) ... [2024-10-24 03:03:49,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 03:03:49,921 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.13.cil-1.c[914,927] [2024-10-24 03:03:49,991 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.13.cil-1.c[7115,7128] [2024-10-24 03:03:50,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 03:03:50,174 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 03:03:50,185 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.13.cil-1.c[914,927] [2024-10-24 03:03:50,202 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.13.cil-1.c[7115,7128] [2024-10-24 03:03:50,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 03:03:50,292 INFO L204 MainTranslator]: Completed translation [2024-10-24 03:03:50,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50 WrapperNode [2024-10-24 03:03:50,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 03:03:50,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 03:03:50,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 03:03:50,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 03:03:50,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,384 INFO L138 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1134 [2024-10-24 03:03:50,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 03:03:50,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 03:03:50,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 03:03:50,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 03:03:50,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,408 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,437 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]. [2024-10-24 03:03:50,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 03:03:50,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 03:03:50,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 03:03:50,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 03:03:50,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (1/1) ... [2024-10-24 03:03:50,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 03:03:50,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:03:50,543 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) [2024-10-24 03:03:50,547 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 [2024-10-24 03:03:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 03:03:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 03:03:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 03:03:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-24 03:03:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-24 03:03:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-24 03:03:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-24 03:03:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-24 03:03:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-24 03:03:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-24 03:03:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-24 03:03:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-24 03:03:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-24 03:03:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-24 03:03:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-24 03:03:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-24 03:03:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-24 03:03:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-24 03:03:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-24 03:03:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-24 03:03:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-24 03:03:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-24 03:03:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-24 03:03:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 03:03:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-24 03:03:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-24 03:03:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-24 03:03:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-24 03:03:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 03:03:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 03:03:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-24 03:03:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-24 03:03:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-24 03:03:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-24 03:03:50,768 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 03:03:50,770 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 03:03:52,033 INFO L? ?]: Removed 137 outVars from TransFormulas that were not future-live. [2024-10-24 03:03:52,034 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 03:03:52,111 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 03:03:52,112 INFO L314 CfgBuilder]: Removed 20 assume(true) statements. [2024-10-24 03:03:52,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:52 BoogieIcfgContainer [2024-10-24 03:03:52,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 03:03:52,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 03:03:52,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 03:03:52,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 03:03:52,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:03:49" (1/3) ... [2024-10-24 03:03:52,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60840213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:52, skipping insertion in model container [2024-10-24 03:03:52,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:50" (2/3) ... [2024-10-24 03:03:52,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60840213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:52, skipping insertion in model container [2024-10-24 03:03:52,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:52" (3/3) ... [2024-10-24 03:03:52,125 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-10-24 03:03:52,142 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 03:03:52,142 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 03:03:52,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 03:03:52,235 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;@5122aac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 03:03:52,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 03:03:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 409 states have (on average 1.7212713936430317) internal successors, (704), 417 states have internal predecessors, (704), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-24 03:03:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:03:52,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:03:52,255 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] [2024-10-24 03:03:52,255 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:03:52,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:03:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1646457945, now seen corresponding path program 1 times [2024-10-24 03:03:52,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:03:52,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567807468] [2024-10-24 03:03:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:03:52,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:03:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:52,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:03:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:52,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:03:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:52,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:03:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:52,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:03:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:52,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:03:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:52,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:03:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:52,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:03:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:03:52,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:03:52,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567807468] [2024-10-24 03:03:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567807468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:03:52,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:03:52,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 03:03:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839006350] [2024-10-24 03:03:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:03:52,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:03:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:03:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:03:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:03:52,893 INFO L87 Difference]: Start difference. First operand has 470 states, 409 states have (on average 1.7212713936430317) internal successors, (704), 417 states have internal predecessors, (704), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) 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) [2024-10-24 03:03:54,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:03:54,463 INFO L93 Difference]: Finished difference Result 1038 states and 1729 transitions. [2024-10-24 03:03:54,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:03:54,466 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 [2024-10-24 03:03:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:03:54,482 INFO L225 Difference]: With dead ends: 1038 [2024-10-24 03:03:54,483 INFO L226 Difference]: Without dead ends: 589 [2024-10-24 03:03:54,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-24 03:03:54,497 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 1208 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 03:03:54,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 1618 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 03:03:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-10-24 03:03:54,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 552. [2024-10-24 03:03:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 474 states have (on average 1.590717299578059) internal successors, (754), 481 states have internal predecessors, (754), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2024-10-24 03:03:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 863 transitions. [2024-10-24 03:03:54,628 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 863 transitions. Word has length 58 [2024-10-24 03:03:54,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:03:54,629 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 863 transitions. [2024-10-24 03:03:54,630 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) [2024-10-24 03:03:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 863 transitions. [2024-10-24 03:03:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:03:54,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:03:54,634 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] [2024-10-24 03:03:54,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 03:03:54,635 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:03:54,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:03:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1512224281, now seen corresponding path program 1 times [2024-10-24 03:03:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:03:54,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277219732] [2024-10-24 03:03:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:03:54,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:03:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:54,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:03:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:54,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:03:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:54,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:03:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:54,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:03:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:54,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:03:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:54,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:03:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:54,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:03:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:03:54,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:03:54,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277219732] [2024-10-24 03:03:54,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277219732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:03:54,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:03:54,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:03:54,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594293210] [2024-10-24 03:03:54,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:03:54,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:03:54,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:03:54,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:03:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:03:54,853 INFO L87 Difference]: Start difference. First operand 552 states and 863 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) [2024-10-24 03:03:56,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:03:56,377 INFO L93 Difference]: Finished difference Result 746 states and 1136 transitions. [2024-10-24 03:03:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:03:56,378 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 [2024-10-24 03:03:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:03:56,385 INFO L225 Difference]: With dead ends: 746 [2024-10-24 03:03:56,385 INFO L226 Difference]: Without dead ends: 584 [2024-10-24 03:03:56,387 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 [2024-10-24 03:03:56,389 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 652 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 03:03:56,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 2626 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 03:03:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-10-24 03:03:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 556. [2024-10-24 03:03:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 477 states have (on average 1.5849056603773586) internal successors, (756), 484 states have internal predecessors, (756), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2024-10-24 03:03:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 866 transitions. [2024-10-24 03:03:56,436 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 866 transitions. Word has length 58 [2024-10-24 03:03:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:03:56,436 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 866 transitions. [2024-10-24 03:03:56,436 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) [2024-10-24 03:03:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 866 transitions. [2024-10-24 03:03:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:03:56,439 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:03:56,439 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] [2024-10-24 03:03:56,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 03:03:56,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:03:56,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:03:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash -731759017, now seen corresponding path program 1 times [2024-10-24 03:03:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:03:56,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580456235] [2024-10-24 03:03:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:03:56,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:03:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:56,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:03:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:56,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:03:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:56,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:03:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:56,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:03:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:56,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:03:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:56,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:03:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:56,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:03:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:03:56,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:03:56,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580456235] [2024-10-24 03:03:56,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580456235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:03:56,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:03:56,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 03:03:56,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432122308] [2024-10-24 03:03:56,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:03:56,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 03:03:56,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:03:56,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 03:03:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:03:56,636 INFO L87 Difference]: Start difference. First operand 556 states and 866 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) [2024-10-24 03:03:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:03:58,640 INFO L93 Difference]: Finished difference Result 1389 states and 2018 transitions. [2024-10-24 03:03:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-24 03:03:58,643 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 [2024-10-24 03:03:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:03:58,653 INFO L225 Difference]: With dead ends: 1389 [2024-10-24 03:03:58,653 INFO L226 Difference]: Without dead ends: 1211 [2024-10-24 03:03:58,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 03:03:58,660 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 4079 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4097 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:03:58,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4097 Valid, 2048 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 03:03:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-10-24 03:03:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1094. [2024-10-24 03:03:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 896 states have (on average 1.4810267857142858) internal successors, (1327), 911 states have internal predecessors, (1327), 111 states have call successors, (111), 75 states have call predecessors, (111), 85 states have return successors, (125), 109 states have call predecessors, (125), 107 states have call successors, (125) [2024-10-24 03:03:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1563 transitions. [2024-10-24 03:03:58,747 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1563 transitions. Word has length 58 [2024-10-24 03:03:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:03:58,748 INFO L471 AbstractCegarLoop]: Abstraction has 1094 states and 1563 transitions. [2024-10-24 03:03:58,748 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) [2024-10-24 03:03:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1563 transitions. [2024-10-24 03:03:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 03:03:58,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:03:58,753 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] [2024-10-24 03:03:58,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 03:03:58,753 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:03:58,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:03:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1118498206, now seen corresponding path program 1 times [2024-10-24 03:03:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:03:58,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565185901] [2024-10-24 03:03:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:03:58,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:03:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:58,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:03:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:58,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:03:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:58,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:03:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:58,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:03:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:58,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:03:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:58,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:03:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:58,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:03:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:03:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:03:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:03:58,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565185901] [2024-10-24 03:03:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565185901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:03:58,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:03:58,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:03:58,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472717779] [2024-10-24 03:03:58,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:03:58,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:03:58,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:03:58,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:03:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:03:58,951 INFO L87 Difference]: Start difference. First operand 1094 states and 1563 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) [2024-10-24 03:04:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:00,344 INFO L93 Difference]: Finished difference Result 1904 states and 2635 transitions. [2024-10-24 03:04:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 03:04:00,345 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 [2024-10-24 03:04:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:00,354 INFO L225 Difference]: With dead ends: 1904 [2024-10-24 03:04:00,355 INFO L226 Difference]: Without dead ends: 1194 [2024-10-24 03:04:00,359 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 [2024-10-24 03:04:00,360 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 655 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:00,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2623 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 03:04:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2024-10-24 03:04:00,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1110. [2024-10-24 03:04:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 908 states have (on average 1.4691629955947136) internal successors, (1334), 923 states have internal predecessors, (1334), 111 states have call successors, (111), 75 states have call predecessors, (111), 89 states have return successors, (129), 113 states have call predecessors, (129), 107 states have call successors, (129) [2024-10-24 03:04:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1574 transitions. [2024-10-24 03:04:00,453 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1574 transitions. Word has length 59 [2024-10-24 03:04:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:00,454 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1574 transitions. [2024-10-24 03:04:00,454 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) [2024-10-24 03:04:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1574 transitions. [2024-10-24 03:04:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 03:04:00,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:00,455 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] [2024-10-24 03:04:00,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 03:04:00,456 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:00,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash 804729828, now seen corresponding path program 1 times [2024-10-24 03:04:00,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:00,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008189429] [2024-10-24 03:04:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:00,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:00,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:00,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:00,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:00,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:00,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:00,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:00,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:00,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:00,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008189429] [2024-10-24 03:04:00,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008189429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:00,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:00,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:00,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740923443] [2024-10-24 03:04:00,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:00,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:00,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:00,594 INFO L87 Difference]: Start difference. First operand 1110 states and 1574 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) [2024-10-24 03:04:01,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:01,545 INFO L93 Difference]: Finished difference Result 2636 states and 3557 transitions. [2024-10-24 03:04:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 03:04:01,546 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 [2024-10-24 03:04:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:01,555 INFO L225 Difference]: With dead ends: 2636 [2024-10-24 03:04:01,556 INFO L226 Difference]: Without dead ends: 1911 [2024-10-24 03:04:01,557 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 [2024-10-24 03:04:01,558 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 2141 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:01,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 993 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:04:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2024-10-24 03:04:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1779. [2024-10-24 03:04:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1407 states have (on average 1.3951670220326937) internal successors, (1963), 1435 states have internal predecessors, (1963), 194 states have call successors, (194), 142 states have call predecessors, (194), 176 states have return successors, (260), 204 states have call predecessors, (260), 190 states have call successors, (260) [2024-10-24 03:04:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2417 transitions. [2024-10-24 03:04:01,708 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2417 transitions. Word has length 59 [2024-10-24 03:04:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:01,708 INFO L471 AbstractCegarLoop]: Abstraction has 1779 states and 2417 transitions. [2024-10-24 03:04:01,709 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) [2024-10-24 03:04:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2417 transitions. [2024-10-24 03:04:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 03:04:01,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:01,710 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] [2024-10-24 03:04:01,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 03:04:01,711 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:01,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:01,711 INFO L85 PathProgramCache]: Analyzing trace with hash -140761581, now seen corresponding path program 1 times [2024-10-24 03:04:01,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:01,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867321091] [2024-10-24 03:04:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:01,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:01,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:01,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:01,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:01,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:01,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:01,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:01,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:01,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867321091] [2024-10-24 03:04:01,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867321091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:01,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:01,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:04:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001517301] [2024-10-24 03:04:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:01,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:04:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:04:01,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:04:01,830 INFO L87 Difference]: Start difference. First operand 1779 states and 2417 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) [2024-10-24 03:04:02,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:02,889 INFO L93 Difference]: Finished difference Result 4007 states and 5265 transitions. [2024-10-24 03:04:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:04:02,890 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 [2024-10-24 03:04:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:02,903 INFO L225 Difference]: With dead ends: 4007 [2024-10-24 03:04:02,903 INFO L226 Difference]: Without dead ends: 2618 [2024-10-24 03:04:02,907 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 [2024-10-24 03:04:02,908 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 830 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:02,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1584 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 03:04:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2024-10-24 03:04:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2370. [2024-10-24 03:04:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 1852 states have (on average 1.3650107991360692) internal successors, (2528), 1885 states have internal predecessors, (2528), 266 states have call successors, (266), 204 states have call predecessors, (266), 250 states have return successors, (353), 283 states have call predecessors, (353), 262 states have call successors, (353) [2024-10-24 03:04:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3147 transitions. [2024-10-24 03:04:03,086 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3147 transitions. Word has length 60 [2024-10-24 03:04:03,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:03,086 INFO L471 AbstractCegarLoop]: Abstraction has 2370 states and 3147 transitions. [2024-10-24 03:04:03,088 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) [2024-10-24 03:04:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3147 transitions. [2024-10-24 03:04:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 03:04:03,090 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:03,091 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] [2024-10-24 03:04:03,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 03:04:03,092 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:03,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1929223218, now seen corresponding path program 1 times [2024-10-24 03:04:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563947253] [2024-10-24 03:04:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:03,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:03,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:03,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:03,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:03,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:03,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:03,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:03,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:03,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563947253] [2024-10-24 03:04:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563947253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:03,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:04:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735996118] [2024-10-24 03:04:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:03,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:04:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:04:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:04:03,191 INFO L87 Difference]: Start difference. First operand 2370 states and 3147 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) [2024-10-24 03:04:04,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:04,157 INFO L93 Difference]: Finished difference Result 4961 states and 6420 transitions. [2024-10-24 03:04:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:04:04,158 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 [2024-10-24 03:04:04,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:04,173 INFO L225 Difference]: With dead ends: 4961 [2024-10-24 03:04:04,173 INFO L226 Difference]: Without dead ends: 2979 [2024-10-24 03:04:04,177 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 [2024-10-24 03:04:04,178 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 1395 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:04,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 1344 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:04:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2024-10-24 03:04:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2719. [2024-10-24 03:04:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2123 states have (on average 1.3523316062176165) internal successors, (2871), 2160 states have internal predecessors, (2871), 304 states have call successors, (304), 238 states have call predecessors, (304), 290 states have return successors, (403), 323 states have call predecessors, (403), 300 states have call successors, (403) [2024-10-24 03:04:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3578 transitions. [2024-10-24 03:04:04,401 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3578 transitions. Word has length 66 [2024-10-24 03:04:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:04,401 INFO L471 AbstractCegarLoop]: Abstraction has 2719 states and 3578 transitions. [2024-10-24 03:04:04,402 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) [2024-10-24 03:04:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3578 transitions. [2024-10-24 03:04:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 03:04:04,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:04,403 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] [2024-10-24 03:04:04,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 03:04:04,403 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:04,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash -840666750, now seen corresponding path program 1 times [2024-10-24 03:04:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:04,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945824960] [2024-10-24 03:04:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:04,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:04,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:04,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:04,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:04,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:04,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:04,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:04,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:04,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:04,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945824960] [2024-10-24 03:04:04,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945824960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:04,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:04,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:04,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446380947] [2024-10-24 03:04:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:04,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:04,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:04,513 INFO L87 Difference]: Start difference. First operand 2719 states and 3578 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) [2024-10-24 03:04:05,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:05,488 INFO L93 Difference]: Finished difference Result 3580 states and 4626 transitions. [2024-10-24 03:04:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 03:04:05,489 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 [2024-10-24 03:04:05,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:05,505 INFO L225 Difference]: With dead ends: 3580 [2024-10-24 03:04:05,505 INFO L226 Difference]: Without dead ends: 3577 [2024-10-24 03:04:05,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-24 03:04:05,508 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 2442 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:05,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2452 Valid, 1014 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:04:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2024-10-24 03:04:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 2997. [2024-10-24 03:04:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2330 states have (on average 1.3412017167381973) internal successors, (3125), 2370 states have internal predecessors, (3125), 336 states have call successors, (336), 266 states have call predecessors, (336), 329 states have return successors, (454), 363 states have call predecessors, (454), 333 states have call successors, (454) [2024-10-24 03:04:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 3915 transitions. [2024-10-24 03:04:05,788 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 3915 transitions. Word has length 67 [2024-10-24 03:04:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:05,789 INFO L471 AbstractCegarLoop]: Abstraction has 2997 states and 3915 transitions. [2024-10-24 03:04:05,789 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) [2024-10-24 03:04:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 3915 transitions. [2024-10-24 03:04:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 03:04:05,790 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:05,791 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] [2024-10-24 03:04:05,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 03:04:05,791 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:05,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash -292413828, now seen corresponding path program 1 times [2024-10-24 03:04:05,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:05,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735307865] [2024-10-24 03:04:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:05,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:05,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:05,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:05,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:05,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:05,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:05,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:05,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:05,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735307865] [2024-10-24 03:04:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735307865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:04:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255302515] [2024-10-24 03:04:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:05,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:04:05,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:04:05,991 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) [2024-10-24 03:04:05,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 03:04:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:06,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 03:04:06,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:04:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:06,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 03:04:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:06,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255302515] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 03:04:06,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 03:04:06,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-10-24 03:04:06,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628861432] [2024-10-24 03:04:06,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 03:04:06,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 03:04:06,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 03:04:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:04:06,481 INFO L87 Difference]: Start difference. First operand 2997 states and 3915 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) [2024-10-24 03:04:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:08,483 INFO L93 Difference]: Finished difference Result 6256 states and 7927 transitions. [2024-10-24 03:04:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-24 03:04:08,484 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 [2024-10-24 03:04:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:08,514 INFO L225 Difference]: With dead ends: 6256 [2024-10-24 03:04:08,514 INFO L226 Difference]: Without dead ends: 6253 [2024-10-24 03:04:08,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2024-10-24 03:04:08,518 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 1867 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:08,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1934 Valid, 2273 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 03:04:08,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2024-10-24 03:04:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 5385. [2024-10-24 03:04:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 4140 states have (on average 1.3128019323671498) internal successors, (5435), 4207 states have internal predecessors, (5435), 615 states have call successors, (615), 508 states have call predecessors, (615), 628 states have return successors, (837), 672 states have call predecessors, (837), 612 states have call successors, (837) [2024-10-24 03:04:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 6887 transitions. [2024-10-24 03:04:09,160 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 6887 transitions. Word has length 68 [2024-10-24 03:04:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:09,161 INFO L471 AbstractCegarLoop]: Abstraction has 5385 states and 6887 transitions. [2024-10-24 03:04:09,161 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) [2024-10-24 03:04:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 6887 transitions. [2024-10-24 03:04:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 03:04:09,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:09,163 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] [2024-10-24 03:04:09,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 03:04:09,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:04:09,364 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:09,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1452481154, now seen corresponding path program 2 times [2024-10-24 03:04:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:09,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891757164] [2024-10-24 03:04:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:09,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:09,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:09,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:09,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:09,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:09,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:09,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891757164] [2024-10-24 03:04:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891757164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:09,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:09,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:04:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114341739] [2024-10-24 03:04:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:09,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:04:09,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:04:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:04:09,444 INFO L87 Difference]: Start difference. First operand 5385 states and 6887 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) [2024-10-24 03:04:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:10,460 INFO L93 Difference]: Finished difference Result 7583 states and 9633 transitions. [2024-10-24 03:04:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 03:04:10,461 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 [2024-10-24 03:04:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:10,480 INFO L225 Difference]: With dead ends: 7583 [2024-10-24 03:04:10,480 INFO L226 Difference]: Without dead ends: 3342 [2024-10-24 03:04:10,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:04:10,490 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 1653 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:10,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 1069 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:04:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2024-10-24 03:04:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2627. [2024-10-24 03:04:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2064 states have (on average 1.3255813953488371) internal successors, (2736), 2093 states have internal predecessors, (2736), 292 states have call successors, (292), 232 states have call predecessors, (292), 269 states have return successors, (369), 304 states have call predecessors, (369), 289 states have call successors, (369) [2024-10-24 03:04:10,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3397 transitions. [2024-10-24 03:04:10,769 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3397 transitions. Word has length 71 [2024-10-24 03:04:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:10,772 INFO L471 AbstractCegarLoop]: Abstraction has 2627 states and 3397 transitions. [2024-10-24 03:04:10,772 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) [2024-10-24 03:04:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3397 transitions. [2024-10-24 03:04:10,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 03:04:10,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:10,774 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] [2024-10-24 03:04:10,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 03:04:10,774 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:10,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:10,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1086181570, now seen corresponding path program 1 times [2024-10-24 03:04:10,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675847625] [2024-10-24 03:04:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:10,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 03:04:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 03:04:10,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675847625] [2024-10-24 03:04:10,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675847625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:10,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:10,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 03:04:10,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979864549] [2024-10-24 03:04:10,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:10,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:04:10,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:10,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:04:10,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:04:10,910 INFO L87 Difference]: Start difference. First operand 2627 states and 3397 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) [2024-10-24 03:04:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:12,526 INFO L93 Difference]: Finished difference Result 7185 states and 9032 transitions. [2024-10-24 03:04:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 03:04:12,526 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 [2024-10-24 03:04:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:12,548 INFO L225 Difference]: With dead ends: 7185 [2024-10-24 03:04:12,549 INFO L226 Difference]: Without dead ends: 4307 [2024-10-24 03:04:12,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-24 03:04:12,558 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 1095 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:12,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 2005 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 03:04:12,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2024-10-24 03:04:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4031. [2024-10-24 03:04:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 3105 states have (on average 1.279549114331723) internal successors, (3973), 3167 states have internal predecessors, (3973), 458 states have call successors, (458), 374 states have call predecessors, (458), 466 states have return successors, (661), 492 states have call predecessors, (661), 455 states have call successors, (661) [2024-10-24 03:04:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 5092 transitions. [2024-10-24 03:04:12,956 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 5092 transitions. Word has length 76 [2024-10-24 03:04:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:12,957 INFO L471 AbstractCegarLoop]: Abstraction has 4031 states and 5092 transitions. [2024-10-24 03:04:12,958 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) [2024-10-24 03:04:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 5092 transitions. [2024-10-24 03:04:12,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 03:04:12,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:12,961 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] [2024-10-24 03:04:12,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 03:04:12,962 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:12,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -967419781, now seen corresponding path program 1 times [2024-10-24 03:04:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487406831] [2024-10-24 03:04:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 03:04:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 03:04:13,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:13,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487406831] [2024-10-24 03:04:13,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487406831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:13,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:13,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:04:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865699010] [2024-10-24 03:04:13,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:13,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:04:13,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:04:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:04:13,101 INFO L87 Difference]: Start difference. First operand 4031 states and 5092 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) [2024-10-24 03:04:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:14,638 INFO L93 Difference]: Finished difference Result 6861 states and 8540 transitions. [2024-10-24 03:04:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 03:04:14,638 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 [2024-10-24 03:04:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:14,655 INFO L225 Difference]: With dead ends: 6861 [2024-10-24 03:04:14,656 INFO L226 Difference]: Without dead ends: 3573 [2024-10-24 03:04:14,663 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 [2024-10-24 03:04:14,664 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 1949 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:14,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 1992 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 03:04:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2024-10-24 03:04:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3157. [2024-10-24 03:04:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 2430 states have (on average 1.2707818930041153) internal successors, (3088), 2481 states have internal predecessors, (3088), 357 states have call successors, (357), 286 states have call predecessors, (357), 368 states have return successors, (484), 392 states have call predecessors, (484), 354 states have call successors, (484) [2024-10-24 03:04:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 3929 transitions. [2024-10-24 03:04:14,983 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 3929 transitions. Word has length 86 [2024-10-24 03:04:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:14,983 INFO L471 AbstractCegarLoop]: Abstraction has 3157 states and 3929 transitions. [2024-10-24 03:04:14,983 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) [2024-10-24 03:04:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 3929 transitions. [2024-10-24 03:04:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-24 03:04:14,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:14,987 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] [2024-10-24 03:04:14,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 03:04:14,987 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:14,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1382957003, now seen corresponding path program 1 times [2024-10-24 03:04:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184112114] [2024-10-24 03:04:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 03:04:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 03:04:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 03:04:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 03:04:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 03:04:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 03:04:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-24 03:04:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 03:04:15,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184112114] [2024-10-24 03:04:15,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184112114] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:04:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807909603] [2024-10-24 03:04:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:15,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:04:15,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:04:15,170 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) [2024-10-24 03:04:15,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 03:04:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:15,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 03:04:15,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:04:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 03:04:15,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:04:15,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807909603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:15,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:04:15,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-10-24 03:04:15,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622242062] [2024-10-24 03:04:15,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:15,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:04:15,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:15,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:04:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-24 03:04:15,416 INFO L87 Difference]: Start difference. First operand 3157 states and 3929 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) [2024-10-24 03:04:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:15,700 INFO L93 Difference]: Finished difference Result 4654 states and 5736 transitions. [2024-10-24 03:04:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 03:04:15,701 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 [2024-10-24 03:04:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:15,710 INFO L225 Difference]: With dead ends: 4654 [2024-10-24 03:04:15,710 INFO L226 Difference]: Without dead ends: 1887 [2024-10-24 03:04:15,716 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 [2024-10-24 03:04:15,717 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 0 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:15,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3388 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:04:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2024-10-24 03:04:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2024-10-24 03:04:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1527 states have (on average 1.3012442698100852) internal successors, (1987), 1544 states have internal predecessors, (1987), 184 states have call successors, (184), 134 states have call predecessors, (184), 174 states have return successors, (244), 209 states have call predecessors, (244), 181 states have call successors, (244) [2024-10-24 03:04:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2415 transitions. [2024-10-24 03:04:15,966 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2415 transitions. Word has length 131 [2024-10-24 03:04:15,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:15,966 INFO L471 AbstractCegarLoop]: Abstraction has 1887 states and 2415 transitions. [2024-10-24 03:04:15,967 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) [2024-10-24 03:04:15,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2415 transitions. [2024-10-24 03:04:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-24 03:04:15,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:15,970 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-24 03:04:15,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 03:04:16,170 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,SelfDestructingSolverStorable12 [2024-10-24 03:04:16,171 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:16,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1968087991, now seen corresponding path program 1 times [2024-10-24 03:04:16,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:16,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639010420] [2024-10-24 03:04:16,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:16,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 03:04:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 03:04:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-24 03:04:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 03:04:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-24 03:04:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-24 03:04:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 03:04:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 03:04:16,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:16,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639010420] [2024-10-24 03:04:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639010420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:16,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:04:16,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016186158] [2024-10-24 03:04:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:16,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:04:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:16,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:04:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:04:16,297 INFO L87 Difference]: Start difference. First operand 1887 states and 2415 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 03:04:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:17,110 INFO L93 Difference]: Finished difference Result 1945 states and 2475 transitions. [2024-10-24 03:04:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:04:17,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2024-10-24 03:04:17,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:17,119 INFO L225 Difference]: With dead ends: 1945 [2024-10-24 03:04:17,119 INFO L226 Difference]: Without dead ends: 1690 [2024-10-24 03:04:17,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:04:17,121 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 757 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:17,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1531 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 03:04:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2024-10-24 03:04:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1635. [2024-10-24 03:04:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1337 states have (on average 1.3193717277486912) internal successors, (1764), 1351 states have internal predecessors, (1764), 154 states have call successors, (154), 108 states have call predecessors, (154), 142 states have return successors, (204), 176 states have call predecessors, (204), 151 states have call successors, (204) [2024-10-24 03:04:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2122 transitions. [2024-10-24 03:04:17,260 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2122 transitions. Word has length 133 [2024-10-24 03:04:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:17,260 INFO L471 AbstractCegarLoop]: Abstraction has 1635 states and 2122 transitions. [2024-10-24 03:04:17,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 03:04:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2122 transitions. [2024-10-24 03:04:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-24 03:04:17,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:17,263 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:17,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 03:04:17,264 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:17,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1783040043, now seen corresponding path program 1 times [2024-10-24 03:04:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108843580] [2024-10-24 03:04:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:17,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 03:04:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:04:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 03:04:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 03:04:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-24 03:04:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 03:04:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-24 03:04:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-24 03:04:17,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108843580] [2024-10-24 03:04:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108843580] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:17,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:17,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727332376] [2024-10-24 03:04:17,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:17,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:17,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:17,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:17,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:17,391 INFO L87 Difference]: Start difference. First operand 1635 states and 2122 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-10-24 03:04:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:18,335 INFO L93 Difference]: Finished difference Result 2790 states and 3510 transitions. [2024-10-24 03:04:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 03:04:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 145 [2024-10-24 03:04:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:18,344 INFO L225 Difference]: With dead ends: 2790 [2024-10-24 03:04:18,344 INFO L226 Difference]: Without dead ends: 1628 [2024-10-24 03:04:18,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:04:18,347 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 688 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:18,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1979 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 03:04:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2024-10-24 03:04:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1543. [2024-10-24 03:04:18,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1267 states have (on average 1.3267561168113655) internal successors, (1681), 1281 states have internal predecessors, (1681), 143 states have call successors, (143), 99 states have call predecessors, (143), 131 states have return successors, (188), 163 states have call predecessors, (188), 140 states have call successors, (188) [2024-10-24 03:04:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2012 transitions. [2024-10-24 03:04:18,472 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2012 transitions. Word has length 145 [2024-10-24 03:04:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:18,473 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 2012 transitions. [2024-10-24 03:04:18,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-10-24 03:04:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2012 transitions. [2024-10-24 03:04:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 03:04:18,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:18,476 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:18,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 03:04:18,476 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:18,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1937284978, now seen corresponding path program 1 times [2024-10-24 03:04:18,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:18,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470075418] [2024-10-24 03:04:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:18,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:04:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:04:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:04:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:04:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 03:04:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:04:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-24 03:04:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 03:04:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:04:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:04:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-24 03:04:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-24 03:04:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-24 03:04:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-24 03:04:18,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:18,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470075418] [2024-10-24 03:04:18,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470075418] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:04:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151546949] [2024-10-24 03:04:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:18,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:04:18,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:04:18,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:04:18,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 03:04:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:18,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 03:04:18,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:04:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 03:04:19,056 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:04:19,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151546949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:19,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:04:19,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-24 03:04:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118988689] [2024-10-24 03:04:19,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:19,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:04:19,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:19,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:04:19,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:04:19,060 INFO L87 Difference]: Start difference. First operand 1543 states and 2012 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-10-24 03:04:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:19,771 INFO L93 Difference]: Finished difference Result 3680 states and 4633 transitions. [2024-10-24 03:04:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:04:19,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2024-10-24 03:04:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:19,778 INFO L225 Difference]: With dead ends: 3680 [2024-10-24 03:04:19,779 INFO L226 Difference]: Without dead ends: 2398 [2024-10-24 03:04:19,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-24 03:04:19,781 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 376 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:19,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1016 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 03:04:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2024-10-24 03:04:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2359. [2024-10-24 03:04:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1931 states have (on average 1.2692905230450544) internal successors, (2451), 1950 states have internal predecessors, (2451), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2024-10-24 03:04:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 2972 transitions. [2024-10-24 03:04:19,942 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 2972 transitions. Word has length 147 [2024-10-24 03:04:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:19,943 INFO L471 AbstractCegarLoop]: Abstraction has 2359 states and 2972 transitions. [2024-10-24 03:04:19,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-10-24 03:04:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 2972 transitions. [2024-10-24 03:04:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:19,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:19,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:19,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 03:04:20,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:04:20,150 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:20,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash -219207472, now seen corresponding path program 1 times [2024-10-24 03:04:20,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:20,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260344691] [2024-10-24 03:04:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:20,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:20,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:20,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:20,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:20,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:20,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:20,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:20,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260344691] [2024-10-24 03:04:20,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260344691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:20,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:20,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:04:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375719711] [2024-10-24 03:04:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:20,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:04:20,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:04:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:04:20,360 INFO L87 Difference]: Start difference. First operand 2359 states and 2972 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:22,779 INFO L93 Difference]: Finished difference Result 2871 states and 3832 transitions. [2024-10-24 03:04:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:04:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:22,787 INFO L225 Difference]: With dead ends: 2871 [2024-10-24 03:04:22,787 INFO L226 Difference]: Without dead ends: 2499 [2024-10-24 03:04:22,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:04:22,789 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 1156 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:22,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 896 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 03:04:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2024-10-24 03:04:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2359. [2024-10-24 03:04:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1931 states have (on average 1.2687726566545832) internal successors, (2450), 1950 states have internal predecessors, (2450), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2024-10-24 03:04:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 2971 transitions. [2024-10-24 03:04:23,287 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 2971 transitions. Word has length 172 [2024-10-24 03:04:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:23,288 INFO L471 AbstractCegarLoop]: Abstraction has 2359 states and 2971 transitions. [2024-10-24 03:04:23,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 2971 transitions. [2024-10-24 03:04:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:23,291 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:23,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:23,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 03:04:23,292 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:23,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash -727986286, now seen corresponding path program 1 times [2024-10-24 03:04:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:23,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897834209] [2024-10-24 03:04:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:23,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:23,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:23,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:23,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:23,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897834209] [2024-10-24 03:04:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897834209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:23,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:23,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:04:23,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315251514] [2024-10-24 03:04:23,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:23,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:04:23,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:23,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:04:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:04:23,495 INFO L87 Difference]: Start difference. First operand 2359 states and 2971 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:25,744 INFO L93 Difference]: Finished difference Result 2863 states and 3815 transitions. [2024-10-24 03:04:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:04:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:25,751 INFO L225 Difference]: With dead ends: 2863 [2024-10-24 03:04:25,751 INFO L226 Difference]: Without dead ends: 2499 [2024-10-24 03:04:25,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:04:25,753 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 1147 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:25,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 894 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 03:04:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2024-10-24 03:04:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2359. [2024-10-24 03:04:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1931 states have (on average 1.268254790264112) internal successors, (2449), 1950 states have internal predecessors, (2449), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2024-10-24 03:04:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 2970 transitions. [2024-10-24 03:04:26,220 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 2970 transitions. Word has length 172 [2024-10-24 03:04:26,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:26,221 INFO L471 AbstractCegarLoop]: Abstraction has 2359 states and 2970 transitions. [2024-10-24 03:04:26,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 2970 transitions. [2024-10-24 03:04:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:26,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:26,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:26,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 03:04:26,224 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:26,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:26,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1467242580, now seen corresponding path program 1 times [2024-10-24 03:04:26,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:26,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370239604] [2024-10-24 03:04:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:26,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:26,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:26,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:26,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:26,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:26,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370239604] [2024-10-24 03:04:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370239604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:26,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:26,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:04:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909009926] [2024-10-24 03:04:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:26,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:04:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:04:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:04:26,482 INFO L87 Difference]: Start difference. First operand 2359 states and 2970 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:29,627 INFO L93 Difference]: Finished difference Result 3374 states and 4674 transitions. [2024-10-24 03:04:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:04:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:29,639 INFO L225 Difference]: With dead ends: 3374 [2024-10-24 03:04:29,639 INFO L226 Difference]: Without dead ends: 3017 [2024-10-24 03:04:29,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:04:29,643 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 1800 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:29,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 1350 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2640 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-24 03:04:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2024-10-24 03:04:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2736. [2024-10-24 03:04:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2279 states have (on average 1.3277753400614305) internal successors, (3026), 2299 states have internal predecessors, (3026), 239 states have call successors, (239), 160 states have call predecessors, (239), 216 states have return successors, (329), 277 states have call predecessors, (329), 236 states have call successors, (329) [2024-10-24 03:04:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3594 transitions. [2024-10-24 03:04:30,276 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3594 transitions. Word has length 172 [2024-10-24 03:04:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:30,277 INFO L471 AbstractCegarLoop]: Abstraction has 2736 states and 3594 transitions. [2024-10-24 03:04:30,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:30,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3594 transitions. [2024-10-24 03:04:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:30,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:30,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:30,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 03:04:30,281 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:30,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:30,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1822619440, now seen corresponding path program 1 times [2024-10-24 03:04:30,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:30,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988743441] [2024-10-24 03:04:30,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:30,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:30,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:30,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:30,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:30,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:30,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:30,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:30,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988743441] [2024-10-24 03:04:30,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988743441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:30,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:30,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387962591] [2024-10-24 03:04:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:30,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:30,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:30,569 INFO L87 Difference]: Start difference. First operand 2736 states and 3594 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:34,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:34,918 INFO L93 Difference]: Finished difference Result 4289 states and 6204 transitions. [2024-10-24 03:04:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:04:34,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:34,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:34,926 INFO L225 Difference]: With dead ends: 4289 [2024-10-24 03:04:34,926 INFO L226 Difference]: Without dead ends: 3555 [2024-10-24 03:04:34,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:04:34,928 INFO L432 NwaCegarLoop]: 568 mSDtfsCounter, 1837 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4264 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 4365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:34,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 2458 Invalid, 4365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 4264 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-24 03:04:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2024-10-24 03:04:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3084. [2024-10-24 03:04:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3084 states, 2598 states have (on average 1.3645111624326405) internal successors, (3545), 2619 states have internal predecessors, (3545), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2024-10-24 03:04:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3084 states to 3084 states and 4159 transitions. [2024-10-24 03:04:35,316 INFO L78 Accepts]: Start accepts. Automaton has 3084 states and 4159 transitions. Word has length 172 [2024-10-24 03:04:35,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:35,316 INFO L471 AbstractCegarLoop]: Abstraction has 3084 states and 4159 transitions. [2024-10-24 03:04:35,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3084 states and 4159 transitions. [2024-10-24 03:04:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:35,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:35,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:35,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 03:04:35,319 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:35,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:35,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1436757038, now seen corresponding path program 1 times [2024-10-24 03:04:35,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:35,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536472758] [2024-10-24 03:04:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:35,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:35,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:35,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:35,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:35,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:35,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:35,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:35,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536472758] [2024-10-24 03:04:35,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536472758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:35,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:35,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:35,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826998828] [2024-10-24 03:04:35,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:35,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:35,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:35,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:35,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:35,591 INFO L87 Difference]: Start difference. First operand 3084 states and 4159 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:39,910 INFO L93 Difference]: Finished difference Result 5630 states and 8431 transitions. [2024-10-24 03:04:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:04:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:39,925 INFO L225 Difference]: With dead ends: 5630 [2024-10-24 03:04:39,925 INFO L226 Difference]: Without dead ends: 4548 [2024-10-24 03:04:39,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:04:39,930 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 1835 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 4363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:39,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 2456 Invalid, 4363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4260 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-24 03:04:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2024-10-24 03:04:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 3781. [2024-10-24 03:04:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3237 states have (on average 1.4161260426320668) internal successors, (4584), 3260 states have internal predecessors, (4584), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2024-10-24 03:04:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5294 transitions. [2024-10-24 03:04:40,361 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5294 transitions. Word has length 172 [2024-10-24 03:04:40,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:40,362 INFO L471 AbstractCegarLoop]: Abstraction has 3781 states and 5294 transitions. [2024-10-24 03:04:40,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:40,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5294 transitions. [2024-10-24 03:04:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:40,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:40,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:40,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 03:04:40,366 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:40,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1701404528, now seen corresponding path program 1 times [2024-10-24 03:04:40,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:40,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221255615] [2024-10-24 03:04:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:40,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:40,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:40,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:40,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:40,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:40,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:40,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:40,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221255615] [2024-10-24 03:04:40,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221255615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:40,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:40,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:40,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45956903] [2024-10-24 03:04:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:40,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:40,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:40,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:40,678 INFO L87 Difference]: Start difference. First operand 3781 states and 5294 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:42,810 INFO L93 Difference]: Finished difference Result 6315 states and 9557 transitions. [2024-10-24 03:04:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:04:42,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:42,828 INFO L225 Difference]: With dead ends: 6315 [2024-10-24 03:04:42,828 INFO L226 Difference]: Without dead ends: 4536 [2024-10-24 03:04:42,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:04:42,835 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 1579 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:42,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 1143 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 03:04:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2024-10-24 03:04:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3781. [2024-10-24 03:04:43,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3237 states have (on average 1.4145814025332097) internal successors, (4579), 3260 states have internal predecessors, (4579), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2024-10-24 03:04:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5289 transitions. [2024-10-24 03:04:43,352 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5289 transitions. Word has length 172 [2024-10-24 03:04:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:43,352 INFO L471 AbstractCegarLoop]: Abstraction has 3781 states and 5289 transitions. [2024-10-24 03:04:43,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:43,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5289 transitions. [2024-10-24 03:04:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:43,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:43,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:43,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 03:04:43,356 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:43,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:43,356 INFO L85 PathProgramCache]: Analyzing trace with hash 229721106, now seen corresponding path program 1 times [2024-10-24 03:04:43,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:43,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603047474] [2024-10-24 03:04:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:43,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:43,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:43,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:43,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:43,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:43,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:43,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603047474] [2024-10-24 03:04:43,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603047474] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:43,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:43,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:43,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660488894] [2024-10-24 03:04:43,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:43,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:43,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:43,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:43,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:43,614 INFO L87 Difference]: Start difference. First operand 3781 states and 5289 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:45,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:45,972 INFO L93 Difference]: Finished difference Result 6309 states and 9531 transitions. [2024-10-24 03:04:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:04:45,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:45,991 INFO L225 Difference]: With dead ends: 6309 [2024-10-24 03:04:45,991 INFO L226 Difference]: Without dead ends: 4530 [2024-10-24 03:04:45,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:04:45,999 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 1677 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:45,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 1142 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 03:04:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4530 states. [2024-10-24 03:04:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4530 to 3781. [2024-10-24 03:04:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3237 states have (on average 1.4130367624343527) internal successors, (4574), 3260 states have internal predecessors, (4574), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2024-10-24 03:04:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5284 transitions. [2024-10-24 03:04:46,539 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5284 transitions. Word has length 172 [2024-10-24 03:04:46,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:46,539 INFO L471 AbstractCegarLoop]: Abstraction has 3781 states and 5284 transitions. [2024-10-24 03:04:46,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5284 transitions. [2024-10-24 03:04:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:46,542 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:46,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:46,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 03:04:46,542 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:46,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1093457840, now seen corresponding path program 1 times [2024-10-24 03:04:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:46,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008613993] [2024-10-24 03:04:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:46,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:46,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:46,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:46,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:46,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:46,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008613993] [2024-10-24 03:04:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008613993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:46,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:46,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317986787] [2024-10-24 03:04:46,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:46,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:46,798 INFO L87 Difference]: Start difference. First operand 3781 states and 5284 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:51,090 INFO L93 Difference]: Finished difference Result 8180 states and 12594 transitions. [2024-10-24 03:04:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:04:51,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:51,116 INFO L225 Difference]: With dead ends: 8180 [2024-10-24 03:04:51,116 INFO L226 Difference]: Without dead ends: 6401 [2024-10-24 03:04:51,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:04:51,125 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 1821 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:51,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 2456 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 03:04:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2024-10-24 03:04:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 5189. [2024-10-24 03:04:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 4529 states have (on average 1.4714064914992273) internal successors, (6664), 4556 states have internal predecessors, (6664), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2024-10-24 03:04:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 7572 transitions. [2024-10-24 03:04:51,753 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 7572 transitions. Word has length 172 [2024-10-24 03:04:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:51,753 INFO L471 AbstractCegarLoop]: Abstraction has 5189 states and 7572 transitions. [2024-10-24 03:04:51,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:51,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 7572 transitions. [2024-10-24 03:04:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:51,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:51,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:51,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 03:04:51,757 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:51,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash -755170290, now seen corresponding path program 1 times [2024-10-24 03:04:51,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:51,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880931431] [2024-10-24 03:04:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:51,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:51,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:51,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:51,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:51,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:52,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:52,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880931431] [2024-10-24 03:04:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880931431] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:52,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896832517] [2024-10-24 03:04:52,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:52,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:52,008 INFO L87 Difference]: Start difference. First operand 5189 states and 7572 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:04:54,480 INFO L93 Difference]: Finished difference Result 9615 states and 14963 transitions. [2024-10-24 03:04:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:04:54,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:04:54,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:04:54,504 INFO L225 Difference]: With dead ends: 9615 [2024-10-24 03:04:54,504 INFO L226 Difference]: Without dead ends: 6428 [2024-10-24 03:04:54,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:04:54,515 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 1369 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 03:04:54,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 1368 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 03:04:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2024-10-24 03:04:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 5189. [2024-10-24 03:04:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 4529 states have (on average 1.4694192978582468) internal successors, (6655), 4556 states have internal predecessors, (6655), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2024-10-24 03:04:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 7563 transitions. [2024-10-24 03:04:55,179 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 7563 transitions. Word has length 172 [2024-10-24 03:04:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:04:55,180 INFO L471 AbstractCegarLoop]: Abstraction has 5189 states and 7563 transitions. [2024-10-24 03:04:55,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:04:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 7563 transitions. [2024-10-24 03:04:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:04:55,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:04:55,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:04:55,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 03:04:55,183 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:04:55,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:04:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash -328615792, now seen corresponding path program 1 times [2024-10-24 03:04:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:04:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061657491] [2024-10-24 03:04:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:04:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:04:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:55,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:04:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:55,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:04:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:55,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:04:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:55,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:04:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:55,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:04:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:04:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:04:55,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:04:55,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061657491] [2024-10-24 03:04:55,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061657491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:04:55,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:04:55,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:04:55,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407858619] [2024-10-24 03:04:55,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:04:55,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:04:55,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:04:55,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:04:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:04:55,453 INFO L87 Difference]: Start difference. First operand 5189 states and 7563 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:05:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:05:00,043 INFO L93 Difference]: Finished difference Result 13308 states and 20992 transitions. [2024-10-24 03:05:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:05:00,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:05:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:05:00,070 INFO L225 Difference]: With dead ends: 13308 [2024-10-24 03:05:00,070 INFO L226 Difference]: Without dead ends: 10121 [2024-10-24 03:05:00,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:05:00,082 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 1813 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4141 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:05:00,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 2456 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4141 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 03:05:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10121 states. [2024-10-24 03:05:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10121 to 8015. [2024-10-24 03:05:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8015 states, 7123 states have (on average 1.5211287378913378) internal successors, (10835), 7158 states have internal predecessors, (10835), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2024-10-24 03:05:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8015 states to 8015 states and 12157 transitions. [2024-10-24 03:05:00,752 INFO L78 Accepts]: Start accepts. Automaton has 8015 states and 12157 transitions. Word has length 172 [2024-10-24 03:05:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:05:00,752 INFO L471 AbstractCegarLoop]: Abstraction has 8015 states and 12157 transitions. [2024-10-24 03:05:00,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:05:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 8015 states and 12157 transitions. [2024-10-24 03:05:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:05:00,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:05:00,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:05:00,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 03:05:00,756 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:05:00,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:05:00,756 INFO L85 PathProgramCache]: Analyzing trace with hash -869045298, now seen corresponding path program 1 times [2024-10-24 03:05:00,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:05:00,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148792038] [2024-10-24 03:05:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:05:00,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:05:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:05:00,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:05:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:05:00,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:05:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:05:01,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:05:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:05:01,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:05:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:05:01,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:05:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:05:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:05:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:05:01,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148792038] [2024-10-24 03:05:01,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148792038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:05:01,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:05:01,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:05:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564253473] [2024-10-24 03:05:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:05:01,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:05:01,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:05:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:05:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:05:01,069 INFO L87 Difference]: Start difference. First operand 8015 states and 12157 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)