./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c775d42bfad3c45ab40b07224c097c48233d7fc79c2c6639ab29adb0162bc4be --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:16:18,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:16:18,317 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:16:18,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:16:18,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:16:18,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:16:18,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:16:18,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:16:18,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:16:18,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:16:18,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:16:18,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:16:18,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:16:18,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:16:18,356 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:16:18,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:16:18,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:16:18,357 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:16:18,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:16:18,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:16:18,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:16:18,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:16:18,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:16:18,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:16:18,359 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:16:18,359 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:16:18,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:16:18,360 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:16:18,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:16:18,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:16:18,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:16:18,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:16:18,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:16:18,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:16:18,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:16:18,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:16:18,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:16:18,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:16:18,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:16:18,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:16:18,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:16:18,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:16:18,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c775d42bfad3c45ab40b07224c097c48233d7fc79c2c6639ab29adb0162bc4be [2024-11-18 16:16:18,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:16:18,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:16:18,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:16:18,618 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:16:18,618 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:16:18,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2024-11-18 16:16:20,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:16:20,162 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:16:20,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2024-11-18 16:16:20,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847869bb7/5fa89d602c88400b9d32f47c94ba248f/FLAGc4899edd7 [2024-11-18 16:16:20,194 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/847869bb7/5fa89d602c88400b9d32f47c94ba248f [2024-11-18 16:16:20,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:16:20,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:16:20,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:16:20,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:16:20,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:16:20,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68da6bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20, skipping insertion in model container [2024-11-18 16:16:20,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:16:20,409 WARN L250 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_1.cil-2+token_ring.04.cil-2.c[913,926] [2024-11-18 16:16:20,468 WARN L250 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_1.cil-2+token_ring.04.cil-2.c[5977,5990] [2024-11-18 16:16:20,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:16:20,526 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:16:20,536 WARN L250 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_1.cil-2+token_ring.04.cil-2.c[913,926] [2024-11-18 16:16:20,555 WARN L250 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_1.cil-2+token_ring.04.cil-2.c[5977,5990] [2024-11-18 16:16:20,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:16:20,605 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:16:20,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20 WrapperNode [2024-11-18 16:16:20,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:16:20,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:16:20,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:16:20,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:16:20,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,662 INFO L138 Inliner]: procedures = 56, calls = 61, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 609 [2024-11-18 16:16:20,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:16:20,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:16:20,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:16:20,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:16:20,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,726 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]. [2024-11-18 16:16:20,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:16:20,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:16:20,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:16:20,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:16:20,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (1/1) ... [2024-11-18 16:16:20,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:16:20,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:20,847 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) [2024-11-18 16:16:20,858 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 [2024-11-18 16:16:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:16:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:16:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:16:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-18 16:16:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-18 16:16:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:16:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:16:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:16:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:16:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:16:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:16:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:16:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:16:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:16:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:16:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:16:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:16:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:16:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:16:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:16:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:16:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:16:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:16:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:16:21,047 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:16:21,076 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:16:21,675 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-18 16:16:21,675 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:16:21,702 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:16:21,703 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-18 16:16:21,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:16:21 BoogieIcfgContainer [2024-11-18 16:16:21,703 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:16:21,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:16:21,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:16:21,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:16:21,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:16:20" (1/3) ... [2024-11-18 16:16:21,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a67aa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:16:21, skipping insertion in model container [2024-11-18 16:16:21,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:16:20" (2/3) ... [2024-11-18 16:16:21,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a67aa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:16:21, skipping insertion in model container [2024-11-18 16:16:21,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:16:21" (3/3) ... [2024-11-18 16:16:21,710 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-2.c [2024-11-18 16:16:21,723 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:16:21,723 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:16:21,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:16:21,785 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;@4c06a0d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:16:21,785 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:16:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 228 states have (on average 1.5921052631578947) internal successors, (363), 235 states have internal predecessors, (363), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 16:16:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 16:16:21,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:21,799 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] [2024-11-18 16:16:21,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:21,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1401861542, now seen corresponding path program 1 times [2024-11-18 16:16:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759649769] [2024-11-18 16:16:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:21,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:21,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759649769] [2024-11-18 16:16:21,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759649769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:21,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:21,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:21,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686920622] [2024-11-18 16:16:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:21,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:22,019 INFO L87 Difference]: Start difference. First operand has 267 states, 228 states have (on average 1.5921052631578947) internal successors, (363), 235 states have internal predecessors, (363), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:22,111 INFO L93 Difference]: Finished difference Result 575 states and 898 transitions. [2024-11-18 16:16:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:22,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-18 16:16:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:22,125 INFO L225 Difference]: With dead ends: 575 [2024-11-18 16:16:22,125 INFO L226 Difference]: Without dead ends: 315 [2024-11-18 16:16:22,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:22,133 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 365 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:22,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 484 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-18 16:16:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-11-18 16:16:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 269 states have (on average 1.4684014869888475) internal successors, (395), 273 states have internal predecessors, (395), 30 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (30), 26 states have call predecessors, (30), 26 states have call successors, (30) [2024-11-18 16:16:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 455 transitions. [2024-11-18 16:16:22,200 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 455 transitions. Word has length 44 [2024-11-18 16:16:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:22,200 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 455 transitions. [2024-11-18 16:16:22,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 455 transitions. [2024-11-18 16:16:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 16:16:22,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:22,203 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] [2024-11-18 16:16:22,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:16:22,204 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:22,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:22,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2014891897, now seen corresponding path program 1 times [2024-11-18 16:16:22,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:22,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76379214] [2024-11-18 16:16:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:22,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:22,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:22,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76379214] [2024-11-18 16:16:22,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76379214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:22,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:22,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:22,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573611263] [2024-11-18 16:16:22,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:22,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:22,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:22,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:22,396 INFO L87 Difference]: Start difference. First operand 311 states and 455 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:22,507 INFO L93 Difference]: Finished difference Result 519 states and 743 transitions. [2024-11-18 16:16:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:22,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-18 16:16:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:22,514 INFO L225 Difference]: With dead ends: 519 [2024-11-18 16:16:22,515 INFO L226 Difference]: Without dead ends: 404 [2024-11-18 16:16:22,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:22,524 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 67 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:22,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 755 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:16:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-18 16:16:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 378. [2024-11-18 16:16:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 330 states have (on average 1.4515151515151514) internal successors, (479), 334 states have internal predecessors, (479), 33 states have call successors, (33), 15 states have call predecessors, (33), 13 states have return successors, (34), 29 states have call predecessors, (34), 29 states have call successors, (34) [2024-11-18 16:16:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 546 transitions. [2024-11-18 16:16:22,574 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 546 transitions. Word has length 45 [2024-11-18 16:16:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:22,575 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 546 transitions. [2024-11-18 16:16:22,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 546 transitions. [2024-11-18 16:16:22,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 16:16:22,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:22,580 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] [2024-11-18 16:16:22,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:16:22,581 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:22,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash 995717938, now seen corresponding path program 1 times [2024-11-18 16:16:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:22,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975660603] [2024-11-18 16:16:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:22,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:22,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975660603] [2024-11-18 16:16:22,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975660603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:22,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:22,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:22,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702888249] [2024-11-18 16:16:22,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:22,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:22,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:22,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:22,703 INFO L87 Difference]: Start difference. First operand 378 states and 546 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:22,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:22,791 INFO L93 Difference]: Finished difference Result 731 states and 1034 transitions. [2024-11-18 16:16:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:22,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-18 16:16:22,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:22,797 INFO L225 Difference]: With dead ends: 731 [2024-11-18 16:16:22,798 INFO L226 Difference]: Without dead ends: 549 [2024-11-18 16:16:22,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:22,800 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 352 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:22,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 464 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-18 16:16:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 535. [2024-11-18 16:16:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 469 states have (on average 1.4093816631130065) internal successors, (661), 475 states have internal predecessors, (661), 44 states have call successors, (44), 22 states have call predecessors, (44), 20 states have return successors, (50), 38 states have call predecessors, (50), 40 states have call successors, (50) [2024-11-18 16:16:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 755 transitions. [2024-11-18 16:16:22,840 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 755 transitions. Word has length 45 [2024-11-18 16:16:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:22,840 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 755 transitions. [2024-11-18 16:16:22,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 16:16:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 755 transitions. [2024-11-18 16:16:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 16:16:22,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:22,844 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:22,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:16:22,844 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:22,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash 377619894, now seen corresponding path program 1 times [2024-11-18 16:16:22,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:22,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557324799] [2024-11-18 16:16:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:22,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 16:16:22,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:22,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557324799] [2024-11-18 16:16:22,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557324799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:22,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:22,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253760539] [2024-11-18 16:16:22,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:22,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:22,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:22,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:22,967 INFO L87 Difference]: Start difference. First operand 535 states and 755 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:23,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:23,019 INFO L93 Difference]: Finished difference Result 1047 states and 1452 transitions. [2024-11-18 16:16:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:23,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-11-18 16:16:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:23,025 INFO L225 Difference]: With dead ends: 1047 [2024-11-18 16:16:23,025 INFO L226 Difference]: Without dead ends: 708 [2024-11-18 16:16:23,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:23,029 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 55 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:23,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 802 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-18 16:16:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2024-11-18 16:16:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 620 states have (on average 1.3580645161290323) internal successors, (842), 626 states have internal predecessors, (842), 58 states have call successors, (58), 30 states have call predecessors, (58), 28 states have return successors, (72), 52 states have call predecessors, (72), 54 states have call successors, (72) [2024-11-18 16:16:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 972 transitions. [2024-11-18 16:16:23,074 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 972 transitions. Word has length 62 [2024-11-18 16:16:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:23,074 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 972 transitions. [2024-11-18 16:16:23,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 972 transitions. [2024-11-18 16:16:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:16:23,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:23,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:23,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:16:23,078 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:23,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1247449564, now seen corresponding path program 1 times [2024-11-18 16:16:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:23,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818506437] [2024-11-18 16:16:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:23,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 16:16:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818506437] [2024-11-18 16:16:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818506437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:23,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:23,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174266791] [2024-11-18 16:16:23,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:23,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:23,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:23,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:23,155 INFO L87 Difference]: Start difference. First operand 708 states and 972 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:23,207 INFO L93 Difference]: Finished difference Result 1255 states and 1693 transitions. [2024-11-18 16:16:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:23,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-18 16:16:23,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:23,213 INFO L225 Difference]: With dead ends: 1255 [2024-11-18 16:16:23,213 INFO L226 Difference]: Without dead ends: 835 [2024-11-18 16:16:23,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:23,215 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 339 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:23,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 460 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2024-11-18 16:16:23,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2024-11-18 16:16:23,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 733 states have (on average 1.3287858117326057) internal successors, (974), 739 states have internal predecessors, (974), 66 states have call successors, (66), 36 states have call predecessors, (66), 34 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2024-11-18 16:16:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1124 transitions. [2024-11-18 16:16:23,257 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1124 transitions. Word has length 67 [2024-11-18 16:16:23,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:23,257 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 1124 transitions. [2024-11-18 16:16:23,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1124 transitions. [2024-11-18 16:16:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:16:23,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:23,260 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:16:23,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:16:23,261 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:23,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:23,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2071057538, now seen corresponding path program 1 times [2024-11-18 16:16:23,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:23,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873146742] [2024-11-18 16:16:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:23,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 16:16:23,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:23,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873146742] [2024-11-18 16:16:23,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873146742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:23,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538433499] [2024-11-18 16:16:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:23,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:23,413 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) [2024-11-18 16:16:23,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 16:16:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:23,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:16:23,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:16:23,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:23,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538433499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:23,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:23,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182519971] [2024-11-18 16:16:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:23,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:23,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:23,578 INFO L87 Difference]: Start difference. First operand 835 states and 1124 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:23,622 INFO L93 Difference]: Finished difference Result 1327 states and 1780 transitions. [2024-11-18 16:16:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:23,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-11-18 16:16:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:23,627 INFO L225 Difference]: With dead ends: 1327 [2024-11-18 16:16:23,627 INFO L226 Difference]: Without dead ends: 833 [2024-11-18 16:16:23,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:23,630 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 72 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:23,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 775 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:23,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-11-18 16:16:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 789. [2024-11-18 16:16:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 693 states have (on average 1.3116883116883118) internal successors, (909), 699 states have internal predecessors, (909), 62 states have call successors, (62), 34 states have call predecessors, (62), 32 states have return successors, (78), 56 states have call predecessors, (78), 58 states have call successors, (78) [2024-11-18 16:16:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1049 transitions. [2024-11-18 16:16:23,664 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1049 transitions. Word has length 68 [2024-11-18 16:16:23,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:23,664 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1049 transitions. [2024-11-18 16:16:23,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 16:16:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1049 transitions. [2024-11-18 16:16:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:16:23,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:23,668 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] [2024-11-18 16:16:23,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 16:16:23,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 16:16:23,870 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:23,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:23,871 INFO L85 PathProgramCache]: Analyzing trace with hash -43937983, now seen corresponding path program 1 times [2024-11-18 16:16:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:23,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258811657] [2024-11-18 16:16:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:16:23,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:23,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258811657] [2024-11-18 16:16:23,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258811657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:23,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764078899] [2024-11-18 16:16:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:23,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:23,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:23,926 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) [2024-11-18 16:16:23,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 16:16:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:24,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 16:16:24,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:24,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:16:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764078899] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:24,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 16:16:24,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2024-11-18 16:16:24,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538569751] [2024-11-18 16:16:24,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:24,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:16:24,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:24,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:16:24,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:16:24,116 INFO L87 Difference]: Start difference. First operand 789 states and 1049 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:24,258 INFO L93 Difference]: Finished difference Result 841 states and 1111 transitions. [2024-11-18 16:16:24,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:24,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-18 16:16:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:24,262 INFO L225 Difference]: With dead ends: 841 [2024-11-18 16:16:24,262 INFO L226 Difference]: Without dead ends: 838 [2024-11-18 16:16:24,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:16:24,263 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 661 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:24,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 463 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:16:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-18 16:16:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 788. [2024-11-18 16:16:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 693 states have (on average 1.3088023088023089) internal successors, (907), 698 states have internal predecessors, (907), 61 states have call successors, (61), 34 states have call predecessors, (61), 32 states have return successors, (78), 56 states have call predecessors, (78), 58 states have call successors, (78) [2024-11-18 16:16:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1046 transitions. [2024-11-18 16:16:24,308 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1046 transitions. Word has length 68 [2024-11-18 16:16:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:24,309 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1046 transitions. [2024-11-18 16:16:24,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 16:16:24,309 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1046 transitions. [2024-11-18 16:16:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:16:24,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:24,310 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] [2024-11-18 16:16:24,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 16:16:24,514 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,SelfDestructingSolverStorable6 [2024-11-18 16:16:24,515 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:24,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1362916185, now seen corresponding path program 1 times [2024-11-18 16:16:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876207768] [2024-11-18 16:16:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:16:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876207768] [2024-11-18 16:16:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876207768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440419134] [2024-11-18 16:16:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:24,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:24,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:24,578 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) [2024-11-18 16:16:24,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 16:16:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:24,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:16:24,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:24,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:16:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440419134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:16:24,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:16:24,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-18 16:16:24,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147921837] [2024-11-18 16:16:24,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:16:24,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 16:16:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:24,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 16:16:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:16:24,944 INFO L87 Difference]: Start difference. First operand 788 states and 1046 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 16:16:25,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:25,274 INFO L93 Difference]: Finished difference Result 1942 states and 2548 transitions. [2024-11-18 16:16:25,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 16:16:25,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-11-18 16:16:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:25,279 INFO L225 Difference]: With dead ends: 1942 [2024-11-18 16:16:25,279 INFO L226 Difference]: Without dead ends: 1497 [2024-11-18 16:16:25,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-18 16:16:25,281 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 809 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:25,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 2761 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:16:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2024-11-18 16:16:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1135. [2024-11-18 16:16:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1004 states have (on average 1.2768924302788844) internal successors, (1282), 1014 states have internal predecessors, (1282), 81 states have call successors, (81), 48 states have call predecessors, (81), 48 states have return successors, (109), 73 states have call predecessors, (109), 78 states have call successors, (109) [2024-11-18 16:16:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1472 transitions. [2024-11-18 16:16:25,328 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1472 transitions. Word has length 69 [2024-11-18 16:16:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:25,328 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 1472 transitions. [2024-11-18 16:16:25,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-18 16:16:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1472 transitions. [2024-11-18 16:16:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 16:16:25,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:25,330 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 16:16:25,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 16:16:25,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:25,531 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:25,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2127835896, now seen corresponding path program 1 times [2024-11-18 16:16:25,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:25,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345422434] [2024-11-18 16:16:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 16:16:25,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:25,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345422434] [2024-11-18 16:16:25,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345422434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:25,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078241245] [2024-11-18 16:16:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:25,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:25,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:25,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:25,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 16:16:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:25,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:16:25,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 16:16:25,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:25,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078241245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:25,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:25,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:25,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244224802] [2024-11-18 16:16:25,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:25,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:25,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:25,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:25,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:25,696 INFO L87 Difference]: Start difference. First operand 1135 states and 1472 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 16:16:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:25,737 INFO L93 Difference]: Finished difference Result 1749 states and 2250 transitions. [2024-11-18 16:16:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:25,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-18 16:16:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:25,742 INFO L225 Difference]: With dead ends: 1749 [2024-11-18 16:16:25,742 INFO L226 Difference]: Without dead ends: 1061 [2024-11-18 16:16:25,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:25,744 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 335 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:25,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 478 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-11-18 16:16:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1052. [2024-11-18 16:16:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 929 states have (on average 1.270182992465016) internal successors, (1180), 940 states have internal predecessors, (1180), 77 states have call successors, (77), 44 states have call predecessors, (77), 44 states have return successors, (103), 68 states have call predecessors, (103), 74 states have call successors, (103) [2024-11-18 16:16:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1360 transitions. [2024-11-18 16:16:25,808 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1360 transitions. Word has length 88 [2024-11-18 16:16:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:25,809 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1360 transitions. [2024-11-18 16:16:25,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-18 16:16:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1360 transitions. [2024-11-18 16:16:25,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:25,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:25,811 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] [2024-11-18 16:16:25,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 16:16:26,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:26,016 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:26,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash -433974977, now seen corresponding path program 1 times [2024-11-18 16:16:26,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:26,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730996109] [2024-11-18 16:16:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:26,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:26,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:26,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730996109] [2024-11-18 16:16:26,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730996109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:26,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:26,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:16:26,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045926405] [2024-11-18 16:16:26,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:26,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:26,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:26,042 INFO L87 Difference]: Start difference. First operand 1052 states and 1360 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:26,073 INFO L93 Difference]: Finished difference Result 1231 states and 1628 transitions. [2024-11-18 16:16:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:26,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 2 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 91 [2024-11-18 16:16:26,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:26,078 INFO L225 Difference]: With dead ends: 1231 [2024-11-18 16:16:26,078 INFO L226 Difference]: Without dead ends: 1052 [2024-11-18 16:16:26,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:16:26,080 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 274 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:26,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 462 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2024-11-18 16:16:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2024-11-18 16:16:26,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 929 states have (on average 1.2691065662002152) internal successors, (1179), 940 states have internal predecessors, (1179), 77 states have call successors, (77), 44 states have call predecessors, (77), 44 states have return successors, (103), 68 states have call predecessors, (103), 74 states have call successors, (103) [2024-11-18 16:16:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1359 transitions. [2024-11-18 16:16:26,117 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1359 transitions. Word has length 91 [2024-11-18 16:16:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:26,117 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1359 transitions. [2024-11-18 16:16:26,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1359 transitions. [2024-11-18 16:16:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:26,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:26,119 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] [2024-11-18 16:16:26,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:16:26,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:26,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash -674214723, now seen corresponding path program 1 times [2024-11-18 16:16:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:26,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167049881] [2024-11-18 16:16:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:26,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:26,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167049881] [2024-11-18 16:16:26,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167049881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:26,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:26,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:26,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57748445] [2024-11-18 16:16:26,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:26,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:26,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:26,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:26,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:26,178 INFO L87 Difference]: Start difference. First operand 1052 states and 1359 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:26,531 INFO L93 Difference]: Finished difference Result 1422 states and 1923 transitions. [2024-11-18 16:16:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:16:26,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 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 91 [2024-11-18 16:16:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:26,536 INFO L225 Difference]: With dead ends: 1422 [2024-11-18 16:16:26,536 INFO L226 Difference]: Without dead ends: 1245 [2024-11-18 16:16:26,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:26,537 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 604 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:26,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 932 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:16:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2024-11-18 16:16:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1230. [2024-11-18 16:16:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1087 states have (on average 1.3081876724931003) internal successors, (1422), 1099 states have internal predecessors, (1422), 90 states have call successors, (90), 50 states have call predecessors, (90), 51 states have return successors, (117), 81 states have call predecessors, (117), 87 states have call successors, (117) [2024-11-18 16:16:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1629 transitions. [2024-11-18 16:16:26,583 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1629 transitions. Word has length 91 [2024-11-18 16:16:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:26,583 INFO L471 AbstractCegarLoop]: Abstraction has 1230 states and 1629 transitions. [2024-11-18 16:16:26,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1629 transitions. [2024-11-18 16:16:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:26,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:26,585 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] [2024-11-18 16:16:26,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:16:26,586 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:26,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:26,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1543415675, now seen corresponding path program 1 times [2024-11-18 16:16:26,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:26,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141100088] [2024-11-18 16:16:26,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:26,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:26,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141100088] [2024-11-18 16:16:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141100088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:26,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:26,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646316325] [2024-11-18 16:16:26,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:26,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:26,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:26,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:26,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:26,665 INFO L87 Difference]: Start difference. First operand 1230 states and 1629 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:27,155 INFO L93 Difference]: Finished difference Result 1802 states and 2502 transitions. [2024-11-18 16:16:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:27,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 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 91 [2024-11-18 16:16:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:27,160 INFO L225 Difference]: With dead ends: 1802 [2024-11-18 16:16:27,160 INFO L226 Difference]: Without dead ends: 1447 [2024-11-18 16:16:27,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:16:27,162 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 594 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:27,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1667 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:16:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2024-11-18 16:16:27,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1396. [2024-11-18 16:16:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1233 states have (on average 1.3309002433090025) internal successors, (1641), 1246 states have internal predecessors, (1641), 103 states have call successors, (103), 56 states have call predecessors, (103), 58 states have return successors, (133), 95 states have call predecessors, (133), 100 states have call successors, (133) [2024-11-18 16:16:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1877 transitions. [2024-11-18 16:16:27,249 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1877 transitions. Word has length 91 [2024-11-18 16:16:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:27,250 INFO L471 AbstractCegarLoop]: Abstraction has 1396 states and 1877 transitions. [2024-11-18 16:16:27,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1877 transitions. [2024-11-18 16:16:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:27,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:27,252 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] [2024-11-18 16:16:27,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:16:27,253 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:27,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1864328775, now seen corresponding path program 1 times [2024-11-18 16:16:27,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:27,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33733491] [2024-11-18 16:16:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:27,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:27,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33733491] [2024-11-18 16:16:27,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33733491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:27,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:27,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700782784] [2024-11-18 16:16:27,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:27,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:27,320 INFO L87 Difference]: Start difference. First operand 1396 states and 1877 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:27,650 INFO L93 Difference]: Finished difference Result 1957 states and 2737 transitions. [2024-11-18 16:16:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:27,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 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 91 [2024-11-18 16:16:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:27,656 INFO L225 Difference]: With dead ends: 1957 [2024-11-18 16:16:27,656 INFO L226 Difference]: Without dead ends: 1436 [2024-11-18 16:16:27,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:27,658 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 471 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:27,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 700 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:16:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2024-11-18 16:16:27,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1396. [2024-11-18 16:16:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1233 states have (on average 1.3284671532846715) internal successors, (1638), 1246 states have internal predecessors, (1638), 103 states have call successors, (103), 56 states have call predecessors, (103), 58 states have return successors, (133), 95 states have call predecessors, (133), 100 states have call successors, (133) [2024-11-18 16:16:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1874 transitions. [2024-11-18 16:16:27,772 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1874 transitions. Word has length 91 [2024-11-18 16:16:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:27,772 INFO L471 AbstractCegarLoop]: Abstraction has 1396 states and 1874 transitions. [2024-11-18 16:16:27,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1874 transitions. [2024-11-18 16:16:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:27,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:27,775 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] [2024-11-18 16:16:27,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:16:27,776 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:27,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 519595963, now seen corresponding path program 1 times [2024-11-18 16:16:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628040406] [2024-11-18 16:16:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:27,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:27,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628040406] [2024-11-18 16:16:27,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628040406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:27,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:27,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:27,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792046326] [2024-11-18 16:16:27,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:27,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:27,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:27,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:27,871 INFO L87 Difference]: Start difference. First operand 1396 states and 1874 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:28,517 INFO L93 Difference]: Finished difference Result 2311 states and 3258 transitions. [2024-11-18 16:16:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 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 91 [2024-11-18 16:16:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:28,524 INFO L225 Difference]: With dead ends: 2311 [2024-11-18 16:16:28,525 INFO L226 Difference]: Without dead ends: 1790 [2024-11-18 16:16:28,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:16:28,527 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 581 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:28,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1632 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:16:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2024-11-18 16:16:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1740. [2024-11-18 16:16:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1535 states have (on average 1.362214983713355) internal successors, (2091), 1552 states have internal predecessors, (2091), 129 states have call successors, (129), 68 states have call predecessors, (129), 74 states have return successors, (171), 123 states have call predecessors, (171), 126 states have call successors, (171) [2024-11-18 16:16:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2391 transitions. [2024-11-18 16:16:28,642 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2391 transitions. Word has length 91 [2024-11-18 16:16:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:28,642 INFO L471 AbstractCegarLoop]: Abstraction has 1740 states and 2391 transitions. [2024-11-18 16:16:28,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2391 transitions. [2024-11-18 16:16:28,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:28,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:28,644 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] [2024-11-18 16:16:28,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:16:28,645 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:28,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash 596496761, now seen corresponding path program 1 times [2024-11-18 16:16:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:28,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693058211] [2024-11-18 16:16:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:28,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:28,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693058211] [2024-11-18 16:16:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693058211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:28,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769145822] [2024-11-18 16:16:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:28,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:28,725 INFO L87 Difference]: Start difference. First operand 1740 states and 2391 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:29,316 INFO L93 Difference]: Finished difference Result 3515 states and 5090 transitions. [2024-11-18 16:16:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 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 91 [2024-11-18 16:16:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:29,326 INFO L225 Difference]: With dead ends: 3515 [2024-11-18 16:16:29,326 INFO L226 Difference]: Without dead ends: 2650 [2024-11-18 16:16:29,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:16:29,329 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 710 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:29,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1607 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:16:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2024-11-18 16:16:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2449. [2024-11-18 16:16:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 2158 states have (on average 1.4063948100092678) internal successors, (3035), 2189 states have internal predecessors, (3035), 177 states have call successors, (177), 92 states have call predecessors, (177), 112 states have return successors, (267), 175 states have call predecessors, (267), 174 states have call successors, (267) [2024-11-18 16:16:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3479 transitions. [2024-11-18 16:16:29,448 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3479 transitions. Word has length 91 [2024-11-18 16:16:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:29,448 INFO L471 AbstractCegarLoop]: Abstraction has 2449 states and 3479 transitions. [2024-11-18 16:16:29,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3479 transitions. [2024-11-18 16:16:29,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:29,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:29,452 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] [2024-11-18 16:16:29,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:16:29,452 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:29,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:29,452 INFO L85 PathProgramCache]: Analyzing trace with hash -370853893, now seen corresponding path program 1 times [2024-11-18 16:16:29,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:29,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966337916] [2024-11-18 16:16:29,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:29,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:29,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:29,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966337916] [2024-11-18 16:16:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966337916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583031722] [2024-11-18 16:16:29,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:29,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:29,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:29,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:29,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:29,563 INFO L87 Difference]: Start difference. First operand 2449 states and 3479 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:30,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:30,240 INFO L93 Difference]: Finished difference Result 5804 states and 8684 transitions. [2024-11-18 16:16:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:30,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 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 91 [2024-11-18 16:16:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:30,291 INFO L225 Difference]: With dead ends: 5804 [2024-11-18 16:16:30,292 INFO L226 Difference]: Without dead ends: 4230 [2024-11-18 16:16:30,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:16:30,296 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 603 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:30,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1591 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:16:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2024-11-18 16:16:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 3856. [2024-11-18 16:16:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3379 states have (on average 1.4427345368452205) internal successors, (4875), 3456 states have internal predecessors, (4875), 269 states have call successors, (269), 140 states have call predecessors, (269), 206 states have return successors, (551), 275 states have call predecessors, (551), 266 states have call successors, (551) [2024-11-18 16:16:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5695 transitions. [2024-11-18 16:16:30,494 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5695 transitions. Word has length 91 [2024-11-18 16:16:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:30,494 INFO L471 AbstractCegarLoop]: Abstraction has 3856 states and 5695 transitions. [2024-11-18 16:16:30,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5695 transitions. [2024-11-18 16:16:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:30,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:30,498 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] [2024-11-18 16:16:30,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:16:30,499 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:30,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1537603897, now seen corresponding path program 1 times [2024-11-18 16:16:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587209621] [2024-11-18 16:16:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:30,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587209621] [2024-11-18 16:16:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587209621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:30,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:30,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:16:30,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225780576] [2024-11-18 16:16:30,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:30,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:16:30,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:30,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:16:30,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:16:30,560 INFO L87 Difference]: Start difference. First operand 3856 states and 5695 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:31,093 INFO L93 Difference]: Finished difference Result 7169 states and 11003 transitions. [2024-11-18 16:16:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:31,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 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 91 [2024-11-18 16:16:31,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:31,120 INFO L225 Difference]: With dead ends: 7169 [2024-11-18 16:16:31,121 INFO L226 Difference]: Without dead ends: 4188 [2024-11-18 16:16:31,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:31,135 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 463 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:31,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 672 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:16:31,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2024-11-18 16:16:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3856. [2024-11-18 16:16:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3379 states have (on average 1.4377034625628884) internal successors, (4858), 3456 states have internal predecessors, (4858), 269 states have call successors, (269), 140 states have call predecessors, (269), 206 states have return successors, (551), 275 states have call predecessors, (551), 266 states have call successors, (551) [2024-11-18 16:16:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5678 transitions. [2024-11-18 16:16:31,396 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5678 transitions. Word has length 91 [2024-11-18 16:16:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:31,396 INFO L471 AbstractCegarLoop]: Abstraction has 3856 states and 5678 transitions. [2024-11-18 16:16:31,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5678 transitions. [2024-11-18 16:16:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:31,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:31,402 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] [2024-11-18 16:16:31,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:16:31,402 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:31,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:31,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1044977723, now seen corresponding path program 1 times [2024-11-18 16:16:31,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:31,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058023380] [2024-11-18 16:16:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:31,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058023380] [2024-11-18 16:16:31,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058023380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:31,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:31,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:16:31,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739346151] [2024-11-18 16:16:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:31,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:16:31,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:16:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:31,545 INFO L87 Difference]: Start difference. First operand 3856 states and 5678 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:32,415 INFO L93 Difference]: Finished difference Result 10127 states and 15703 transitions. [2024-11-18 16:16:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:16:32,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 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 91 [2024-11-18 16:16:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:32,444 INFO L225 Difference]: With dead ends: 10127 [2024-11-18 16:16:32,444 INFO L226 Difference]: Without dead ends: 7146 [2024-11-18 16:16:32,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:16:32,453 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 594 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:32,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1153 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:16:32,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7146 states. [2024-11-18 16:16:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7146 to 6834. [2024-11-18 16:16:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6834 states, 5939 states have (on average 1.4642195655834316) internal successors, (8696), 6162 states have internal predecessors, (8696), 445 states have call successors, (445), 236 states have call predecessors, (445), 448 states have return successors, (1495), 467 states have call predecessors, (1495), 442 states have call successors, (1495) [2024-11-18 16:16:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 10636 transitions. [2024-11-18 16:16:32,939 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 10636 transitions. Word has length 91 [2024-11-18 16:16:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:32,939 INFO L471 AbstractCegarLoop]: Abstraction has 6834 states and 10636 transitions. [2024-11-18 16:16:32,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 10636 transitions. [2024-11-18 16:16:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 16:16:32,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:32,945 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] [2024-11-18 16:16:32,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:16:32,946 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:32,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:32,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1998917881, now seen corresponding path program 1 times [2024-11-18 16:16:32,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:32,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506207085] [2024-11-18 16:16:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:32,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:16:32,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:32,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506207085] [2024-11-18 16:16:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506207085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:32,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:16:32,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:16:32,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719332240] [2024-11-18 16:16:32,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:32,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:16:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:16:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:16:32,995 INFO L87 Difference]: Start difference. First operand 6834 states and 10636 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:33,612 INFO L93 Difference]: Finished difference Result 15992 states and 25387 transitions. [2024-11-18 16:16:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:16:33,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 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 91 [2024-11-18 16:16:33,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:33,656 INFO L225 Difference]: With dead ends: 15992 [2024-11-18 16:16:33,656 INFO L226 Difference]: Without dead ends: 10034 [2024-11-18 16:16:33,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:16:33,676 INFO L432 NwaCegarLoop]: 600 mSDtfsCounter, 564 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:33,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1122 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:16:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10034 states. [2024-11-18 16:16:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10034 to 9666. [2024-11-18 16:16:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9666 states, 8397 states have (on average 1.4612361557699178) internal successors, (12270), 8703 states have internal predecessors, (12270), 651 states have call successors, (651), 338 states have call predecessors, (651), 616 states have return successors, (1942), 656 states have call predecessors, (1942), 648 states have call successors, (1942) [2024-11-18 16:16:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9666 states to 9666 states and 14863 transitions. [2024-11-18 16:16:34,585 INFO L78 Accepts]: Start accepts. Automaton has 9666 states and 14863 transitions. Word has length 91 [2024-11-18 16:16:34,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:34,586 INFO L471 AbstractCegarLoop]: Abstraction has 9666 states and 14863 transitions. [2024-11-18 16:16:34,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:16:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 9666 states and 14863 transitions. [2024-11-18 16:16:34,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 16:16:34,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:34,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:34,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:16:34,596 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:34,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1789681823, now seen corresponding path program 1 times [2024-11-18 16:16:34,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:34,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145040974] [2024-11-18 16:16:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:34,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 16:16:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145040974] [2024-11-18 16:16:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145040974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877553378] [2024-11-18 16:16:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:34,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:34,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:34,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:34,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 16:16:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:34,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:34,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 16:16:34,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:34,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877553378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:34,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:34,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781487326] [2024-11-18 16:16:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:34,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:34,796 INFO L87 Difference]: Start difference. First operand 9666 states and 14863 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 16:16:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:35,195 INFO L93 Difference]: Finished difference Result 10041 states and 15322 transitions. [2024-11-18 16:16:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:35,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-11-18 16:16:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:35,226 INFO L225 Difference]: With dead ends: 10041 [2024-11-18 16:16:35,226 INFO L226 Difference]: Without dead ends: 8804 [2024-11-18 16:16:35,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:35,234 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 61 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:35,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 765 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:35,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8804 states. [2024-11-18 16:16:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8804 to 8804. [2024-11-18 16:16:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8804 states, 7631 states have (on average 1.4856506355654566) internal successors, (11337), 7928 states have internal predecessors, (11337), 594 states have call successors, (594), 301 states have call predecessors, (594), 578 states have return successors, (1857), 606 states have call predecessors, (1857), 592 states have call successors, (1857) [2024-11-18 16:16:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8804 states to 8804 states and 13788 transitions. [2024-11-18 16:16:35,742 INFO L78 Accepts]: Start accepts. Automaton has 8804 states and 13788 transitions. Word has length 103 [2024-11-18 16:16:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:35,743 INFO L471 AbstractCegarLoop]: Abstraction has 8804 states and 13788 transitions. [2024-11-18 16:16:35,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 16:16:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 8804 states and 13788 transitions. [2024-11-18 16:16:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 16:16:35,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:35,763 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 16:16:35,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 16:16:35,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:35,964 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:35,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1407605105, now seen corresponding path program 1 times [2024-11-18 16:16:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713593896] [2024-11-18 16:16:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 16:16:36,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:36,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713593896] [2024-11-18 16:16:36,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713593896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348681213] [2024-11-18 16:16:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:36,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:36,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:36,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:36,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 16:16:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:36,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:36,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 16:16:36,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:36,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348681213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:36,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:36,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 16:16:36,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269075029] [2024-11-18 16:16:36,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:36,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:36,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:36,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:36,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:36,194 INFO L87 Difference]: Start difference. First operand 8804 states and 13788 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:16:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:36,943 INFO L93 Difference]: Finished difference Result 26205 states and 41298 transitions. [2024-11-18 16:16:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:36,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2024-11-18 16:16:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:36,997 INFO L225 Difference]: With dead ends: 26205 [2024-11-18 16:16:36,998 INFO L226 Difference]: Without dead ends: 17415 [2024-11-18 16:16:37,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:37,026 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 231 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:37,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 530 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2024-11-18 16:16:38,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17311. [2024-11-18 16:16:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17311 states, 14998 states have (on average 1.4839311908254433) internal successors, (22256), 15590 states have internal predecessors, (22256), 1156 states have call successors, (1156), 601 states have call predecessors, (1156), 1156 states have return successors, (3653), 1151 states have call predecessors, (3653), 1154 states have call successors, (3653) [2024-11-18 16:16:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17311 states to 17311 states and 27065 transitions. [2024-11-18 16:16:38,557 INFO L78 Accepts]: Start accepts. Automaton has 17311 states and 27065 transitions. Word has length 148 [2024-11-18 16:16:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:38,557 INFO L471 AbstractCegarLoop]: Abstraction has 17311 states and 27065 transitions. [2024-11-18 16:16:38,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:16:38,558 INFO L276 IsEmpty]: Start isEmpty. Operand 17311 states and 27065 transitions. [2024-11-18 16:16:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 16:16:38,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:38,592 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 16:16:38,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 16:16:38,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:38,797 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:38,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:38,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1503564177, now seen corresponding path program 1 times [2024-11-18 16:16:38,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:38,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202529070] [2024-11-18 16:16:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:38,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 16:16:38,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202529070] [2024-11-18 16:16:38,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202529070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905681404] [2024-11-18 16:16:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:38,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:38,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:38,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:38,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 16:16:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:38,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:38,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 16:16:39,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905681404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:39,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:39,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 16:16:39,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931842635] [2024-11-18 16:16:39,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:39,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:39,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:39,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:39,052 INFO L87 Difference]: Start difference. First operand 17311 states and 27065 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:16:40,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:40,936 INFO L93 Difference]: Finished difference Result 51548 states and 81111 transitions. [2024-11-18 16:16:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:40,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2024-11-18 16:16:40,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:41,073 INFO L225 Difference]: With dead ends: 51548 [2024-11-18 16:16:41,074 INFO L226 Difference]: Without dead ends: 34251 [2024-11-18 16:16:41,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:41,117 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 219 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:41,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 530 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:41,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34251 states. [2024-11-18 16:16:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34251 to 34047. [2024-11-18 16:16:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34047 states, 29480 states have (on average 1.482089552238806) internal successors, (43692), 30662 states have internal predecessors, (43692), 2254 states have call successors, (2254), 1201 states have call predecessors, (2254), 2312 states have return successors, (7219), 2215 states have call predecessors, (7219), 2252 states have call successors, (7219) [2024-11-18 16:16:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34047 states to 34047 states and 53165 transitions. [2024-11-18 16:16:43,326 INFO L78 Accepts]: Start accepts. Automaton has 34047 states and 53165 transitions. Word has length 148 [2024-11-18 16:16:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:43,326 INFO L471 AbstractCegarLoop]: Abstraction has 34047 states and 53165 transitions. [2024-11-18 16:16:43,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:16:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 34047 states and 53165 transitions. [2024-11-18 16:16:43,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 16:16:43,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:43,377 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 16:16:43,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 16:16:43,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:43,582 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:43,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:43,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1999504975, now seen corresponding path program 1 times [2024-11-18 16:16:43,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:43,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663729160] [2024-11-18 16:16:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:43,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 16:16:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663729160] [2024-11-18 16:16:43,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663729160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844577276] [2024-11-18 16:16:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:43,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:43,658 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:43,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 16:16:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:43,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:43,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 16:16:43,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:43,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844577276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:43,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:43,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:16:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996177068] [2024-11-18 16:16:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:43,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:43,792 INFO L87 Difference]: Start difference. First operand 34047 states and 53165 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 16:16:47,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:16:47,731 INFO L93 Difference]: Finished difference Result 100559 states and 158506 transitions. [2024-11-18 16:16:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:16:47,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 148 [2024-11-18 16:16:47,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:16:48,342 INFO L225 Difference]: With dead ends: 100559 [2024-11-18 16:16:48,343 INFO L226 Difference]: Without dead ends: 66527 [2024-11-18 16:16:48,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:48,415 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 235 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:16:48,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 798 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:16:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66527 states. [2024-11-18 16:16:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66527 to 66527. [2024-11-18 16:16:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66527 states, 57533 states have (on average 1.4741452731475848) internal successors, (84812), 59828 states have internal predecessors, (84812), 4369 states have call successors, (4369), 2401 states have call predecessors, (4369), 4624 states have return successors, (15214), 4361 states have call predecessors, (15214), 4367 states have call successors, (15214) [2024-11-18 16:16:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66527 states to 66527 states and 104395 transitions. [2024-11-18 16:16:53,820 INFO L78 Accepts]: Start accepts. Automaton has 66527 states and 104395 transitions. Word has length 148 [2024-11-18 16:16:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:16:53,821 INFO L471 AbstractCegarLoop]: Abstraction has 66527 states and 104395 transitions. [2024-11-18 16:16:53,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 16:16:53,821 INFO L276 IsEmpty]: Start isEmpty. Operand 66527 states and 104395 transitions. [2024-11-18 16:16:54,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-18 16:16:54,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:16:54,059 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:16:54,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 16:16:54,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-18 16:16:54,260 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:16:54,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:16:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1363648872, now seen corresponding path program 1 times [2024-11-18 16:16:54,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:16:54,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823085748] [2024-11-18 16:16:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:54,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:16:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 16:16:54,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:16:54,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823085748] [2024-11-18 16:16:54,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823085748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:16:54,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325343848] [2024-11-18 16:16:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:16:54,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:16:54,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:16:54,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:16:54,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 16:16:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:16:54,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:16:54,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:16:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 16:16:54,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:16:54,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325343848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:16:54,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:16:54,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 16:16:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398536735] [2024-11-18 16:16:54,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:16:54,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:16:54,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:16:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:16:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:16:54,610 INFO L87 Difference]: Start difference. First operand 66527 states and 104395 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 16:17:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:02,719 INFO L93 Difference]: Finished difference Result 197537 states and 312326 transitions. [2024-11-18 16:17:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:02,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 193 [2024-11-18 16:17:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:03,486 INFO L225 Difference]: With dead ends: 197537 [2024-11-18 16:17:03,486 INFO L226 Difference]: Without dead ends: 131031 [2024-11-18 16:17:03,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:03,678 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 170 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:03,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 530 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:03,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131031 states.