./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.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.12.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 cb07c62e0c8f9c002ab72b797de071664dce20871b109c1b4c0b79acbb73493c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:17:18,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:17:18,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:17:18,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:17:18,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:17:18,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:17:18,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:17:18,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:17:18,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:17:18,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:17:18,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:17:18,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:17:18,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:17:18,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:17:18,956 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:17:18,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:17:18,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:17:18,957 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:17:18,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:17:18,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:17:18,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:17:18,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:17:18,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:17:18,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:17:18,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:17:18,959 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:17:18,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:17:18,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:17:18,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:17:18,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:17:18,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:17:18,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:17:18,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:17:18,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:17:18,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:17:18,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:17:18,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:17:18,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:17:18,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:17:18,964 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:17:18,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:17:18,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:17:18,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb07c62e0c8f9c002ab72b797de071664dce20871b109c1b4c0b79acbb73493c [2024-11-18 16:17:19,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:17:19,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:17:19,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:17:19,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:17:19,314 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:17:19,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-2.c [2024-11-18 16:17:20,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:17:21,068 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:17:21,069 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-2.c [2024-11-18 16:17:21,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de553888/02ca931acd9f407ebff453b7254e7e9a/FLAG125808ab2 [2024-11-18 16:17:21,357 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5de553888/02ca931acd9f407ebff453b7254e7e9a [2024-11-18 16:17:21,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:17:21,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:17:21,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:17:21,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:17:21,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:17:21,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:17:21" (1/1) ... [2024-11-18 16:17:21,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eae0c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:21, skipping insertion in model container [2024-11-18 16:17:21,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:17:21" (1/1) ... [2024-11-18 16:17:21,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:17:21,649 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.12.cil-2.c[913,926] [2024-11-18 16:17:21,724 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.12.cil-2.c[5977,5990] [2024-11-18 16:17:21,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:17:21,888 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:17:21,904 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.12.cil-2.c[913,926] [2024-11-18 16:17:21,925 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.12.cil-2.c[5977,5990] [2024-11-18 16:17:21,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:17:22,010 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:17:22,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22 WrapperNode [2024-11-18 16:17:22,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:17:22,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:17:22,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:17:22,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:17:22,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,095 INFO L138 Inliner]: procedures = 72, calls = 84, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1083 [2024-11-18 16:17:22,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:17:22,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:17:22,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:17:22,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:17:22,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,155 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 16:17:22,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:17:22,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:17:22,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:17:22,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:17:22,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (1/1) ... [2024-11-18 16:17:22,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:17:22,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:17:22,273 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 16:17:22,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 16:17:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:17:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:17:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:17:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-18 16:17:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-18 16:17:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:17:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:17:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:17:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:17:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:17:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:17:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:17:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:17:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:17:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:17:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:17:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:17:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:17:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:17:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:17:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:17:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:17:22,552 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:17:22,560 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:17:23,681 INFO L? ?]: Removed 127 outVars from TransFormulas that were not future-live. [2024-11-18 16:17:23,683 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:17:23,740 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:17:23,740 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-18 16:17:23,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:17:23 BoogieIcfgContainer [2024-11-18 16:17:23,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:17:23,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:17:23,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:17:23,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:17:23,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:17:21" (1/3) ... [2024-11-18 16:17:23,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6fb86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:17:23, skipping insertion in model container [2024-11-18 16:17:23,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:17:22" (2/3) ... [2024-11-18 16:17:23,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6fb86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:17:23, skipping insertion in model container [2024-11-18 16:17:23,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:17:23" (3/3) ... [2024-11-18 16:17:23,752 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.12.cil-2.c [2024-11-18 16:17:23,773 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:17:23,773 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:17:23,858 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:17:23,864 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;@59e82cf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:17:23,864 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:17:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 467 states, 423 states have (on average 1.6288416075650118) internal successors, (689), 428 states have internal predecessors, (689), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 16:17:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 16:17:23,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:23,881 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 16:17:23,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:23,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1208991052, now seen corresponding path program 1 times [2024-11-18 16:17:23,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161509626] [2024-11-18 16:17:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:24,234 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 16:17:24,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:24,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161509626] [2024-11-18 16:17:24,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161509626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:24,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:24,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:17:24,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416574674] [2024-11-18 16:17:24,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:24,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:24,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:24,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:17:24,274 INFO L87 Difference]: Start difference. First operand has 467 states, 423 states have (on average 1.6288416075650118) internal successors, (689), 428 states have internal predecessors, (689), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) 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 16:17:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:24,426 INFO L93 Difference]: Finished difference Result 968 states and 1558 transitions. [2024-11-18 16:17:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:24,434 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 16:17:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:24,449 INFO L225 Difference]: With dead ends: 968 [2024-11-18 16:17:24,449 INFO L226 Difference]: Without dead ends: 516 [2024-11-18 16:17:24,456 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 16:17:24,460 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 688 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 809 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 16:17:24,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 809 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:24,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-18 16:17:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 512. [2024-11-18 16:17:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 464 states have (on average 1.519396551724138) internal successors, (705), 467 states have internal predecessors, (705), 36 states have call successors, (36), 11 states have call predecessors, (36), 10 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2024-11-18 16:17:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 779 transitions. [2024-11-18 16:17:24,574 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 779 transitions. Word has length 44 [2024-11-18 16:17:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:24,575 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 779 transitions. [2024-11-18 16:17:24,575 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 16:17:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 779 transitions. [2024-11-18 16:17:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 16:17:24,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:24,580 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 16:17:24,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:17:24,580 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:24,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1452845587, now seen corresponding path program 1 times [2024-11-18 16:17:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762057331] [2024-11-18 16:17:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:24,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:17:24,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762057331] [2024-11-18 16:17:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762057331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:24,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:24,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:17:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003657606] [2024-11-18 16:17:24,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:24,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:24,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:17:24,724 INFO L87 Difference]: Start difference. First operand 512 states and 779 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 16:17:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:24,781 INFO L93 Difference]: Finished difference Result 720 states and 1067 transitions. [2024-11-18 16:17:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:24,782 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 16:17:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:24,790 INFO L225 Difference]: With dead ends: 720 [2024-11-18 16:17:24,792 INFO L226 Difference]: Without dead ends: 605 [2024-11-18 16:17:24,794 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 16:17:24,795 INFO L432 NwaCegarLoop]: 727 mSDtfsCounter, 67 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:24,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1403 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-18 16:17:24,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 579. [2024-11-18 16:17:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 525 states have (on average 1.502857142857143) internal successors, (789), 528 states have internal predecessors, (789), 39 states have call successors, (39), 14 states have call predecessors, (39), 13 states have return successors, (42), 37 states have call predecessors, (42), 37 states have call successors, (42) [2024-11-18 16:17:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 870 transitions. [2024-11-18 16:17:24,869 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 870 transitions. Word has length 45 [2024-11-18 16:17:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:24,870 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 870 transitions. [2024-11-18 16:17:24,870 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 16:17:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 870 transitions. [2024-11-18 16:17:24,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 16:17:24,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:24,877 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 16:17:24,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:17:24,878 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:24,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:24,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1557764248, now seen corresponding path program 1 times [2024-11-18 16:17:24,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:24,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323235685] [2024-11-18 16:17:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:24,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:24,972 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 16:17:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:24,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323235685] [2024-11-18 16:17:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323235685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:24,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:17:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664009942] [2024-11-18 16:17:24,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:24,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:17:24,976 INFO L87 Difference]: Start difference. First operand 579 states and 870 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 16:17:25,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:25,031 INFO L93 Difference]: Finished difference Result 932 states and 1358 transitions. [2024-11-18 16:17:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:25,032 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 16:17:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:25,039 INFO L225 Difference]: With dead ends: 932 [2024-11-18 16:17:25,039 INFO L226 Difference]: Without dead ends: 750 [2024-11-18 16:17:25,040 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 16:17:25,042 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 676 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 788 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 16:17:25,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 788 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:25,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-11-18 16:17:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 736. [2024-11-18 16:17:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 664 states have (on average 1.4623493975903614) internal successors, (971), 669 states have internal predecessors, (971), 50 states have call successors, (50), 21 states have call predecessors, (50), 20 states have return successors, (58), 46 states have call predecessors, (58), 48 states have call successors, (58) [2024-11-18 16:17:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1079 transitions. [2024-11-18 16:17:25,083 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1079 transitions. Word has length 45 [2024-11-18 16:17:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:25,085 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 1079 transitions. [2024-11-18 16:17:25,085 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 16:17:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1079 transitions. [2024-11-18 16:17:25,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 16:17:25,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:25,091 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 16:17:25,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:17:25,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:25,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:25,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1791650148, now seen corresponding path program 1 times [2024-11-18 16:17:25,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:25,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506597514] [2024-11-18 16:17:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:25,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:25,197 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 16:17:25,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506597514] [2024-11-18 16:17:25,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506597514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:25,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:25,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:17:25,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21091170] [2024-11-18 16:17:25,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:25,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:25,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:17:25,202 INFO L87 Difference]: Start difference. First operand 736 states and 1079 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 16:17:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:25,266 INFO L93 Difference]: Finished difference Result 1248 states and 1776 transitions. [2024-11-18 16:17:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:25,267 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 16:17:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:25,274 INFO L225 Difference]: With dead ends: 1248 [2024-11-18 16:17:25,274 INFO L226 Difference]: Without dead ends: 909 [2024-11-18 16:17:25,276 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 16:17:25,279 INFO L432 NwaCegarLoop]: 759 mSDtfsCounter, 55 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1450 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 16:17:25,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1450 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:25,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2024-11-18 16:17:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2024-11-18 16:17:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 815 states have (on average 1.4134969325153375) internal successors, (1152), 820 states have internal predecessors, (1152), 64 states have call successors, (64), 29 states have call predecessors, (64), 28 states have return successors, (80), 60 states have call predecessors, (80), 62 states have call successors, (80) [2024-11-18 16:17:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1296 transitions. [2024-11-18 16:17:25,330 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1296 transitions. Word has length 62 [2024-11-18 16:17:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:25,332 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1296 transitions. [2024-11-18 16:17:25,333 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 16:17:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1296 transitions. [2024-11-18 16:17:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:17:25,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:25,336 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 16:17:25,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:17:25,337 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:25,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -298876425, now seen corresponding path program 1 times [2024-11-18 16:17:25,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:25,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070951851] [2024-11-18 16:17:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:25,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:25,453 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 16:17:25,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070951851] [2024-11-18 16:17:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070951851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:25,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:25,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:17:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502239262] [2024-11-18 16:17:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:25,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:17:25,457 INFO L87 Difference]: Start difference. First operand 909 states and 1296 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 16:17:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:25,523 INFO L93 Difference]: Finished difference Result 1456 states and 2017 transitions. [2024-11-18 16:17:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:25,527 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 16:17:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:25,533 INFO L225 Difference]: With dead ends: 1456 [2024-11-18 16:17:25,534 INFO L226 Difference]: Without dead ends: 1036 [2024-11-18 16:17:25,537 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 16:17:25,538 INFO L432 NwaCegarLoop]: 706 mSDtfsCounter, 663 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 784 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 16:17:25,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 784 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:25,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2024-11-18 16:17:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2024-11-18 16:17:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 928 states have (on average 1.3836206896551724) internal successors, (1284), 933 states have internal predecessors, (1284), 72 states have call successors, (72), 35 states have call predecessors, (72), 34 states have return successors, (92), 68 states have call predecessors, (92), 70 states have call successors, (92) [2024-11-18 16:17:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1448 transitions. [2024-11-18 16:17:25,600 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1448 transitions. Word has length 67 [2024-11-18 16:17:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:25,601 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1448 transitions. [2024-11-18 16:17:25,601 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 16:17:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1448 transitions. [2024-11-18 16:17:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:17:25,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:25,604 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 16:17:25,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:17:25,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:25,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash 570483420, now seen corresponding path program 1 times [2024-11-18 16:17:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790799380] [2024-11-18 16:17:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:25,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:25,727 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 16:17:25,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:25,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790799380] [2024-11-18 16:17:25,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790799380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:17:25,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341548126] [2024-11-18 16:17:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:25,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:17:25,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:17:25,730 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 16:17:25,732 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 16:17:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:25,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 16:17:25,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:17:26,072 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 16:17:26,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:17:26,134 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 16:17:26,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341548126] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 16:17:26,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 16:17:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2024-11-18 16:17:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689886320] [2024-11-18 16:17:26,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:26,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:17:26,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:26,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:17:26,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:17:26,136 INFO L87 Difference]: Start difference. First operand 1036 states and 1448 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 16:17:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:26,440 INFO L93 Difference]: Finished difference Result 1092 states and 1516 transitions. [2024-11-18 16:17:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:17:26,441 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 16:17:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:26,448 INFO L225 Difference]: With dead ends: 1092 [2024-11-18 16:17:26,449 INFO L226 Difference]: Without dead ends: 1089 [2024-11-18 16:17:26,449 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 16:17:26,451 INFO L432 NwaCegarLoop]: 725 mSDtfsCounter, 1285 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:26,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 792 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:17:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2024-11-18 16:17:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1035. [2024-11-18 16:17:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 928 states have (on average 1.3814655172413792) internal successors, (1282), 932 states have internal predecessors, (1282), 71 states have call successors, (71), 35 states have call predecessors, (71), 34 states have return successors, (92), 68 states have call predecessors, (92), 70 states have call successors, (92) [2024-11-18 16:17:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1445 transitions. [2024-11-18 16:17:26,524 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1445 transitions. Word has length 68 [2024-11-18 16:17:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:26,526 INFO L471 AbstractCegarLoop]: Abstraction has 1035 states and 1445 transitions. [2024-11-18 16:17:26,526 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 16:17:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1445 transitions. [2024-11-18 16:17:26,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 16:17:26,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:26,528 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 16:17:26,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 16:17:26,729 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 16:17:26,730 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:26,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash 503711194, now seen corresponding path program 1 times [2024-11-18 16:17:26,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:26,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900648078] [2024-11-18 16:17:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:26,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:26,810 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 16:17:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900648078] [2024-11-18 16:17:26,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900648078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:17:26,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181790614] [2024-11-18 16:17:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:26,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:17:26,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:17:26,813 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 16:17:26,815 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 16:17:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:26,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:17:26,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:17:27,219 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 16:17:27,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:17:27,296 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 16:17:27,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181790614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:17:27,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:17:27,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-18 16:17:27,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870010453] [2024-11-18 16:17:27,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:17:27,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 16:17:27,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:27,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 16:17:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:17:27,301 INFO L87 Difference]: Start difference. First operand 1035 states and 1445 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 16:17:27,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:27,877 INFO L93 Difference]: Finished difference Result 2379 states and 3229 transitions. [2024-11-18 16:17:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 16:17:27,878 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 16:17:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:27,888 INFO L225 Difference]: With dead ends: 2379 [2024-11-18 16:17:27,888 INFO L226 Difference]: Without dead ends: 1886 [2024-11-18 16:17:27,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-18 16:17:27,893 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 836 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 5480 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:27,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 5480 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:17:27,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2024-11-18 16:17:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1392. [2024-11-18 16:17:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1249 states have (on average 1.344275420336269) internal successors, (1679), 1258 states have internal predecessors, (1679), 91 states have call successors, (91), 49 states have call predecessors, (91), 50 states have return successors, (123), 85 states have call predecessors, (123), 90 states have call successors, (123) [2024-11-18 16:17:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1893 transitions. [2024-11-18 16:17:27,982 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1893 transitions. Word has length 69 [2024-11-18 16:17:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:27,982 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 1893 transitions. [2024-11-18 16:17:27,982 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 16:17:27,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1893 transitions. [2024-11-18 16:17:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 16:17:27,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:27,986 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 16:17:28,007 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 16:17:28,186 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 16:17:28,187 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:28,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:28,188 INFO L85 PathProgramCache]: Analyzing trace with hash -103634784, now seen corresponding path program 1 times [2024-11-18 16:17:28,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:28,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659087230] [2024-11-18 16:17:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:28,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:28,280 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 16:17:28,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:28,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659087230] [2024-11-18 16:17:28,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659087230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:17:28,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204412808] [2024-11-18 16:17:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:28,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:17:28,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:17:28,283 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 16:17:28,285 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 16:17:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:28,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 16:17:28,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:17:28,475 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 16:17:28,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:17:28,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204412808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:28,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:17:28,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:17:28,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858876366] [2024-11-18 16:17:28,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:28,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:28,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:28,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:28,481 INFO L87 Difference]: Start difference. First operand 1392 states and 1893 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 16:17:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:28,563 INFO L93 Difference]: Finished difference Result 2038 states and 2734 transitions. [2024-11-18 16:17:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:28,564 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 16:17:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:28,572 INFO L225 Difference]: With dead ends: 2038 [2024-11-18 16:17:28,573 INFO L226 Difference]: Without dead ends: 1274 [2024-11-18 16:17:28,576 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 16:17:28,578 INFO L432 NwaCegarLoop]: 731 mSDtfsCounter, 661 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 806 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 16:17:28,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 806 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2024-11-18 16:17:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1259. [2024-11-18 16:17:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1130 states have (on average 1.347787610619469) internal successors, (1523), 1140 states have internal predecessors, (1523), 83 states have call successors, (83), 43 states have call predecessors, (83), 44 states have return successors, (111), 76 states have call predecessors, (111), 82 states have call successors, (111) [2024-11-18 16:17:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1717 transitions. [2024-11-18 16:17:28,659 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1717 transitions. Word has length 88 [2024-11-18 16:17:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:28,660 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1717 transitions. [2024-11-18 16:17:28,660 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 16:17:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1717 transitions. [2024-11-18 16:17:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 16:17:28,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:28,667 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 16:17:28,687 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 16:17:28,867 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 16:17:28,869 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:28,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2097052475, now seen corresponding path program 1 times [2024-11-18 16:17:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:28,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069812450] [2024-11-18 16:17:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:28,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:28,990 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 16:17:28,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:28,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069812450] [2024-11-18 16:17:28,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069812450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:17:28,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228234909] [2024-11-18 16:17:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:28,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:17:28,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:17:28,994 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 16:17:28,996 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 16:17:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:29,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 16:17:29,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:17:29,176 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 16:17:29,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:17:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228234909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:29,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:17:29,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 16:17:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79706117] [2024-11-18 16:17:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:29,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:29,178 INFO L87 Difference]: Start difference. First operand 1259 states and 1717 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 16:17:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:29,261 INFO L93 Difference]: Finished difference Result 1636 states and 2183 transitions. [2024-11-18 16:17:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:29,262 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 16:17:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:29,266 INFO L225 Difference]: With dead ends: 1636 [2024-11-18 16:17:29,266 INFO L226 Difference]: Without dead ends: 391 [2024-11-18 16:17:29,268 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 16:17:29,269 INFO L432 NwaCegarLoop]: 746 mSDtfsCounter, 62 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1422 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 16:17:29,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1422 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:29,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-18 16:17:29,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-18 16:17:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 358 states have (on average 1.5558659217877095) internal successors, (557), 359 states have internal predecessors, (557), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 16:17:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 609 transitions. [2024-11-18 16:17:29,292 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 609 transitions. Word has length 103 [2024-11-18 16:17:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:29,293 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 609 transitions. [2024-11-18 16:17:29,293 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 16:17:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 609 transitions. [2024-11-18 16:17:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:29,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:29,295 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:29,314 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 16:17:29,496 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 16:17:29,497 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:29,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1351627141, now seen corresponding path program 1 times [2024-11-18 16:17:29,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:29,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191792776] [2024-11-18 16:17:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:29,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:17:29,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:29,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191792776] [2024-11-18 16:17:29,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191792776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:29,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:29,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:17:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627616110] [2024-11-18 16:17:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:29,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:29,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:17:29,594 INFO L87 Difference]: Start difference. First operand 391 states and 609 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:29,623 INFO L93 Difference]: Finished difference Result 775 states and 1209 transitions. [2024-11-18 16:17:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:29,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:29,626 INFO L225 Difference]: With dead ends: 775 [2024-11-18 16:17:29,626 INFO L226 Difference]: Without dead ends: 391 [2024-11-18 16:17:29,628 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 16:17:29,628 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 602 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 608 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 16:17:29,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 608 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-18 16:17:29,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-18 16:17:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 358 states have (on average 1.553072625698324) internal successors, (556), 359 states have internal predecessors, (556), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 16:17:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 608 transitions. [2024-11-18 16:17:29,652 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 608 transitions. Word has length 178 [2024-11-18 16:17:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:29,652 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 608 transitions. [2024-11-18 16:17:29,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 608 transitions. [2024-11-18 16:17:29,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:29,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:29,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:29,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:17:29,655 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:29,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1440241849, now seen corresponding path program 1 times [2024-11-18 16:17:29,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:29,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841059192] [2024-11-18 16:17:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:29,725 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 16:17:29,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:29,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841059192] [2024-11-18 16:17:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841059192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:29,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:17:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728839275] [2024-11-18 16:17:29,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:29,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:17:29,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:29,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:17:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:17:29,728 INFO L87 Difference]: Start difference. First operand 391 states and 608 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:29,751 INFO L93 Difference]: Finished difference Result 767 states and 1192 transitions. [2024-11-18 16:17:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:17:29,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:29,754 INFO L225 Difference]: With dead ends: 767 [2024-11-18 16:17:29,754 INFO L226 Difference]: Without dead ends: 391 [2024-11-18 16:17:29,756 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 16:17:29,756 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 593 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 607 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 16:17:29,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 607 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:17:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-18 16:17:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-18 16:17:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 358 states have (on average 1.5502793296089385) internal successors, (555), 359 states have internal predecessors, (555), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 16:17:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 607 transitions. [2024-11-18 16:17:29,775 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 607 transitions. Word has length 178 [2024-11-18 16:17:29,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:29,775 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 607 transitions. [2024-11-18 16:17:29,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:29,776 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 607 transitions. [2024-11-18 16:17:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:29,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:29,777 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:29,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:17:29,778 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:29,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2010513655, now seen corresponding path program 1 times [2024-11-18 16:17:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729771162] [2024-11-18 16:17:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:29,929 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 16:17:29,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:29,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729771162] [2024-11-18 16:17:29,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729771162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:29,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:29,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:17:29,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906688130] [2024-11-18 16:17:29,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:29,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:17:29,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:17:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:17:29,933 INFO L87 Difference]: Start difference. First operand 391 states and 607 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:30,664 INFO L93 Difference]: Finished difference Result 1179 states and 1851 transitions. [2024-11-18 16:17:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:17:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:30,670 INFO L225 Difference]: With dead ends: 1179 [2024-11-18 16:17:30,670 INFO L226 Difference]: Without dead ends: 809 [2024-11-18 16:17:30,672 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 16:17:30,673 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 1163 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:30,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1691 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:17:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-18 16:17:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 780. [2024-11-18 16:17:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 719 states have (on average 1.5632823365785813) internal successors, (1124), 721 states have internal predecessors, (1124), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2024-11-18 16:17:30,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1219 transitions. [2024-11-18 16:17:30,717 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1219 transitions. Word has length 178 [2024-11-18 16:17:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:30,717 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 1219 transitions. [2024-11-18 16:17:30,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1219 transitions. [2024-11-18 16:17:30,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:30,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:30,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:30,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:17:30,720 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:30,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1408468365, now seen corresponding path program 1 times [2024-11-18 16:17:30,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:30,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898115826] [2024-11-18 16:17:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:30,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:30,914 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 16:17:30,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:30,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898115826] [2024-11-18 16:17:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898115826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:30,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:30,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:17:30,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982861248] [2024-11-18 16:17:30,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:30,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:17:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:17:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:30,917 INFO L87 Difference]: Start difference. First operand 780 states and 1219 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:31,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:31,837 INFO L93 Difference]: Finished difference Result 2034 states and 3220 transitions. [2024-11-18 16:17:31,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:17:31,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:31,845 INFO L225 Difference]: With dead ends: 2034 [2024-11-18 16:17:31,846 INFO L226 Difference]: Without dead ends: 1275 [2024-11-18 16:17:31,849 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 16:17:31,849 INFO L432 NwaCegarLoop]: 804 mSDtfsCounter, 1173 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:31,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 3285 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:17:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2024-11-18 16:17:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1142. [2024-11-18 16:17:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1053 states have (on average 1.5565052231718899) internal successors, (1639), 1056 states have internal predecessors, (1639), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (72), 69 states have call predecessors, (72), 68 states have call successors, (72) [2024-11-18 16:17:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1779 transitions. [2024-11-18 16:17:31,916 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1779 transitions. Word has length 178 [2024-11-18 16:17:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:31,916 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 1779 transitions. [2024-11-18 16:17:31,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1779 transitions. [2024-11-18 16:17:31,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:31,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:31,919 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:31,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:17:31,919 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:31,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash 797199307, now seen corresponding path program 1 times [2024-11-18 16:17:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:31,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852525205] [2024-11-18 16:17:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:31,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:32,078 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 16:17:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852525205] [2024-11-18 16:17:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852525205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:32,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:17:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268135090] [2024-11-18 16:17:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:32,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:17:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:17:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:17:32,081 INFO L87 Difference]: Start difference. First operand 1142 states and 1779 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:32,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:32,542 INFO L93 Difference]: Finished difference Result 2383 states and 3761 transitions. [2024-11-18 16:17:32,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:17:32,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:32,550 INFO L225 Difference]: With dead ends: 2383 [2024-11-18 16:17:32,551 INFO L226 Difference]: Without dead ends: 1262 [2024-11-18 16:17:32,554 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 16:17:32,555 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 868 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:32,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1128 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:17:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2024-11-18 16:17:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1142. [2024-11-18 16:17:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1053 states have (on average 1.553656220322887) internal successors, (1636), 1056 states have internal predecessors, (1636), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (72), 69 states have call predecessors, (72), 68 states have call successors, (72) [2024-11-18 16:17:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1776 transitions. [2024-11-18 16:17:32,619 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1776 transitions. Word has length 178 [2024-11-18 16:17:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:32,620 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 1776 transitions. [2024-11-18 16:17:32,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:32,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1776 transitions. [2024-11-18 16:17:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:32,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:32,623 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:32,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:17:32,623 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:32,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1603434103, now seen corresponding path program 1 times [2024-11-18 16:17:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:32,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954626964] [2024-11-18 16:17:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:32,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:32,791 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 16:17:32,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:32,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954626964] [2024-11-18 16:17:32,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954626964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:32,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:32,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:17:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937715648] [2024-11-18 16:17:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:32,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:17:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:17:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:17:32,794 INFO L87 Difference]: Start difference. First operand 1142 states and 1776 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:33,257 INFO L93 Difference]: Finished difference Result 2378 states and 3745 transitions. [2024-11-18 16:17:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:17:33,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:33,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:33,267 INFO L225 Difference]: With dead ends: 2378 [2024-11-18 16:17:33,267 INFO L226 Difference]: Without dead ends: 1257 [2024-11-18 16:17:33,273 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 16:17:33,273 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 820 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:33,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1214 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:17:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2024-11-18 16:17:33,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1142. [2024-11-18 16:17:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1053 states have (on average 1.550807217473884) internal successors, (1633), 1056 states have internal predecessors, (1633), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (72), 69 states have call predecessors, (72), 68 states have call successors, (72) [2024-11-18 16:17:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1773 transitions. [2024-11-18 16:17:33,355 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1773 transitions. Word has length 178 [2024-11-18 16:17:33,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:33,355 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 1773 transitions. [2024-11-18 16:17:33,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1773 transitions. [2024-11-18 16:17:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:33,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:33,357 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:33,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:17:33,358 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:33,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash -156853237, now seen corresponding path program 1 times [2024-11-18 16:17:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424042065] [2024-11-18 16:17:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:33,542 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 16:17:33,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:33,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424042065] [2024-11-18 16:17:33,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424042065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:33,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:33,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:17:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581927098] [2024-11-18 16:17:33,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:33,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:17:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:17:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:33,544 INFO L87 Difference]: Start difference. First operand 1142 states and 1773 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:34,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:34,511 INFO L93 Difference]: Finished difference Result 3166 states and 4973 transitions. [2024-11-18 16:17:34,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:17:34,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:34,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:34,523 INFO L225 Difference]: With dead ends: 3166 [2024-11-18 16:17:34,523 INFO L226 Difference]: Without dead ends: 2045 [2024-11-18 16:17:34,528 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 16:17:34,528 INFO L432 NwaCegarLoop]: 786 mSDtfsCounter, 1149 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:34,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 3217 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:17:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2024-11-18 16:17:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1906. [2024-11-18 16:17:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1759 states have (on average 1.5531552018192154) internal successors, (2732), 1766 states have internal predecessors, (2732), 110 states have call successors, (110), 30 states have call predecessors, (110), 36 states have return successors, (126), 113 states have call predecessors, (126), 110 states have call successors, (126) [2024-11-18 16:17:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2968 transitions. [2024-11-18 16:17:34,649 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2968 transitions. Word has length 178 [2024-11-18 16:17:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:34,650 INFO L471 AbstractCegarLoop]: Abstraction has 1906 states and 2968 transitions. [2024-11-18 16:17:34,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2968 transitions. [2024-11-18 16:17:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:34,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:34,652 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:34,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:17:34,653 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:34,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1080020663, now seen corresponding path program 1 times [2024-11-18 16:17:34,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:34,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429722343] [2024-11-18 16:17:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:34,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:34,813 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 16:17:34,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:34,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429722343] [2024-11-18 16:17:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429722343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:34,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:34,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:17:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963704536] [2024-11-18 16:17:34,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:34,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:17:34,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:17:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:17:34,816 INFO L87 Difference]: Start difference. First operand 1906 states and 2968 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:35,290 INFO L93 Difference]: Finished difference Result 4022 states and 6359 transitions. [2024-11-18 16:17:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:17:35,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:35,307 INFO L225 Difference]: With dead ends: 4022 [2024-11-18 16:17:35,307 INFO L226 Difference]: Without dead ends: 2137 [2024-11-18 16:17:35,313 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 16:17:35,313 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 816 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:35,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1200 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:17:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2024-11-18 16:17:35,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1906. [2024-11-18 16:17:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1759 states have (on average 1.55031267765776) internal successors, (2727), 1766 states have internal predecessors, (2727), 110 states have call successors, (110), 30 states have call predecessors, (110), 36 states have return successors, (126), 113 states have call predecessors, (126), 110 states have call successors, (126) [2024-11-18 16:17:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2963 transitions. [2024-11-18 16:17:35,419 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2963 transitions. Word has length 178 [2024-11-18 16:17:35,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:35,420 INFO L471 AbstractCegarLoop]: Abstraction has 1906 states and 2963 transitions. [2024-11-18 16:17:35,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2963 transitions. [2024-11-18 16:17:35,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:35,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:35,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:35,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:17:35,423 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:35,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash -694158261, now seen corresponding path program 1 times [2024-11-18 16:17:35,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:35,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744883138] [2024-11-18 16:17:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:35,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:35,640 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 16:17:35,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:35,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744883138] [2024-11-18 16:17:35,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744883138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:35,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:35,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:17:35,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856498924] [2024-11-18 16:17:35,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:35,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:17:35,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:35,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:17:35,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:35,643 INFO L87 Difference]: Start difference. First operand 1906 states and 2963 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:36,648 INFO L93 Difference]: Finished difference Result 5602 states and 8835 transitions. [2024-11-18 16:17:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:17:36,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:36,670 INFO L225 Difference]: With dead ends: 5602 [2024-11-18 16:17:36,670 INFO L226 Difference]: Without dead ends: 3717 [2024-11-18 16:17:36,677 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 16:17:36,678 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 1136 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:36,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 3186 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:17:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2024-11-18 16:17:36,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 3548. [2024-11-18 16:17:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3279 states have (on average 1.5641964013418725) internal successors, (5129), 3300 states have internal predecessors, (5129), 194 states have call successors, (194), 54 states have call predecessors, (194), 74 states have return successors, (258), 201 states have call predecessors, (258), 194 states have call successors, (258) [2024-11-18 16:17:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 5581 transitions. [2024-11-18 16:17:36,994 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 5581 transitions. Word has length 178 [2024-11-18 16:17:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:36,994 INFO L471 AbstractCegarLoop]: Abstraction has 3548 states and 5581 transitions. [2024-11-18 16:17:36,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:36,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 5581 transitions. [2024-11-18 16:17:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:36,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:36,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:17:36,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:17:36,998 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:36,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash -958805751, now seen corresponding path program 1 times [2024-11-18 16:17:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:36,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756535963] [2024-11-18 16:17:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:37,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:37,148 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 16:17:37,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756535963] [2024-11-18 16:17:37,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756535963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:37,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:37,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:17:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794644796] [2024-11-18 16:17:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:37,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:17:37,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:37,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:17:37,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:17:37,154 INFO L87 Difference]: Start difference. First operand 3548 states and 5581 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:37,739 INFO L93 Difference]: Finished difference Result 7626 states and 12227 transitions. [2024-11-18 16:17:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:17:37,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:37,771 INFO L225 Difference]: With dead ends: 7626 [2024-11-18 16:17:37,771 INFO L226 Difference]: Without dead ends: 4099 [2024-11-18 16:17:37,786 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 16:17:37,787 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 812 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:37,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1186 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:17:37,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2024-11-18 16:17:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 3548. [2024-11-18 16:17:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3279 states have (on average 1.5614516620921013) internal successors, (5120), 3300 states have internal predecessors, (5120), 194 states have call successors, (194), 54 states have call predecessors, (194), 74 states have return successors, (258), 201 states have call predecessors, (258), 194 states have call successors, (258) [2024-11-18 16:17:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 5572 transitions. [2024-11-18 16:17:38,057 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 5572 transitions. Word has length 178 [2024-11-18 16:17:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:38,057 INFO L471 AbstractCegarLoop]: Abstraction has 3548 states and 5572 transitions. [2024-11-18 16:17:38,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 5572 transitions. [2024-11-18 16:17:38,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:38,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:38,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:38,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:17:38,064 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:38,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash 972319883, now seen corresponding path program 1 times [2024-11-18 16:17:38,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:38,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49636715] [2024-11-18 16:17:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:38,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:38,241 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 16:17:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:38,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49636715] [2024-11-18 16:17:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49636715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:38,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:38,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:17:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942036673] [2024-11-18 16:17:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:38,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:17:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:38,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:17:38,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:38,244 INFO L87 Difference]: Start difference. First operand 3548 states and 5572 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:39,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:39,454 INFO L93 Difference]: Finished difference Result 10892 states and 17428 transitions. [2024-11-18 16:17:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:17:39,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:39,489 INFO L225 Difference]: With dead ends: 10892 [2024-11-18 16:17:39,489 INFO L226 Difference]: Without dead ends: 7365 [2024-11-18 16:17:39,503 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 16:17:39,503 INFO L432 NwaCegarLoop]: 770 mSDtfsCounter, 1123 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:39,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 3155 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:17:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7365 states. [2024-11-18 16:17:40,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7365 to 7138. [2024-11-18 16:17:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7138 states, 6607 states have (on average 1.5846829120629635) internal successors, (10470), 6674 states have internal predecessors, (10470), 362 states have call successors, (362), 102 states have call predecessors, (362), 168 states have return successors, (618), 377 states have call predecessors, (618), 362 states have call successors, (618) [2024-11-18 16:17:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 11450 transitions. [2024-11-18 16:17:40,083 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 11450 transitions. Word has length 178 [2024-11-18 16:17:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:40,083 INFO L471 AbstractCegarLoop]: Abstraction has 7138 states and 11450 transitions. [2024-11-18 16:17:40,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 11450 transitions. [2024-11-18 16:17:40,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:40,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:40,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:40,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 16:17:40,090 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:40,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:40,091 INFO L85 PathProgramCache]: Analyzing trace with hash -350859063, now seen corresponding path program 1 times [2024-11-18 16:17:40,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:40,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571996170] [2024-11-18 16:17:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:17:40,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:40,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571996170] [2024-11-18 16:17:40,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571996170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:40,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:40,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:17:40,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120034341] [2024-11-18 16:17:40,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:40,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:17:40,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:40,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:17:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:17:40,220 INFO L87 Difference]: Start difference. First operand 7138 states and 11450 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:40,880 INFO L93 Difference]: Finished difference Result 15583 states and 25565 transitions. [2024-11-18 16:17:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:17:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:40,917 INFO L225 Difference]: With dead ends: 15583 [2024-11-18 16:17:40,917 INFO L226 Difference]: Without dead ends: 8466 [2024-11-18 16:17:40,942 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 16:17:40,943 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 836 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:40,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1104 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:17:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8466 states. [2024-11-18 16:17:41,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8466 to 7138. [2024-11-18 16:17:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7138 states, 6607 states have (on average 1.5821098834569396) internal successors, (10453), 6674 states have internal predecessors, (10453), 362 states have call successors, (362), 102 states have call predecessors, (362), 168 states have return successors, (618), 377 states have call predecessors, (618), 362 states have call successors, (618) [2024-11-18 16:17:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 11433 transitions. [2024-11-18 16:17:41,414 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 11433 transitions. Word has length 178 [2024-11-18 16:17:41,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:41,414 INFO L471 AbstractCegarLoop]: Abstraction has 7138 states and 11433 transitions. [2024-11-18 16:17:41,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 11433 transitions. [2024-11-18 16:17:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:41,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:41,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:41,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 16:17:41,423 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:41,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash -12571513, now seen corresponding path program 1 times [2024-11-18 16:17:41,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:41,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710940884] [2024-11-18 16:17:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:41,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:17:41,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:41,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710940884] [2024-11-18 16:17:41,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710940884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:41,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:41,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:17:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654537634] [2024-11-18 16:17:41,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:41,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:17:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:17:41,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:41,596 INFO L87 Difference]: Start difference. First operand 7138 states and 11433 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:42,942 INFO L93 Difference]: Finished difference Result 22478 states and 36857 transitions. [2024-11-18 16:17:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:17:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:43,013 INFO L225 Difference]: With dead ends: 22478 [2024-11-18 16:17:43,013 INFO L226 Difference]: Without dead ends: 15361 [2024-11-18 16:17:43,044 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 16:17:43,045 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 1107 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:43,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 3110 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:17:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15361 states. [2024-11-18 16:17:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15361 to 15047. [2024-11-18 16:17:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15047 states, 13938 states have (on average 1.608910891089109) internal successors, (22425), 14151 states have internal predecessors, (22425), 698 states have call successors, (698), 198 states have call predecessors, (698), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2024-11-18 16:17:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15047 states to 15047 states and 24845 transitions. [2024-11-18 16:17:44,145 INFO L78 Accepts]: Start accepts. Automaton has 15047 states and 24845 transitions. Word has length 178 [2024-11-18 16:17:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:44,146 INFO L471 AbstractCegarLoop]: Abstraction has 15047 states and 24845 transitions. [2024-11-18 16:17:44,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 15047 states and 24845 transitions. [2024-11-18 16:17:44,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:44,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:44,161 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:44,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 16:17:44,162 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:44,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 413982985, now seen corresponding path program 1 times [2024-11-18 16:17:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610466303] [2024-11-18 16:17:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:44,338 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 16:17:44,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610466303] [2024-11-18 16:17:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610466303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:17:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838936448] [2024-11-18 16:17:44,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:44,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:17:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:17:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:17:44,341 INFO L87 Difference]: Start difference. First operand 15047 states and 24845 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:45,608 INFO L93 Difference]: Finished difference Result 33503 states and 56873 transitions. [2024-11-18 16:17:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:17:45,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:45,678 INFO L225 Difference]: With dead ends: 33503 [2024-11-18 16:17:45,678 INFO L226 Difference]: Without dead ends: 18477 [2024-11-18 16:17:45,709 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 16:17:45,710 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 801 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:45,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1150 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:17:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18477 states. [2024-11-18 16:17:46,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18477 to 15047. [2024-11-18 16:17:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15047 states, 13938 states have (on average 1.6065432630219543) internal successors, (22392), 14151 states have internal predecessors, (22392), 698 states have call successors, (698), 198 states have call predecessors, (698), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2024-11-18 16:17:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15047 states to 15047 states and 24812 transitions. [2024-11-18 16:17:46,899 INFO L78 Accepts]: Start accepts. Automaton has 15047 states and 24812 transitions. Word has length 178 [2024-11-18 16:17:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:46,900 INFO L471 AbstractCegarLoop]: Abstraction has 15047 states and 24812 transitions. [2024-11-18 16:17:46,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 15047 states and 24812 transitions. [2024-11-18 16:17:46,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:46,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:46,909 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:46,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 16:17:46,910 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:46,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -126446521, now seen corresponding path program 1 times [2024-11-18 16:17:46,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:46,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234916728] [2024-11-18 16:17:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:46,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:47,097 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 16:17:47,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234916728] [2024-11-18 16:17:47,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234916728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:47,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:17:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437018523] [2024-11-18 16:17:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:47,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:17:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:17:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:47,102 INFO L87 Difference]: Start difference. First operand 15047 states and 24812 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:49,805 INFO L93 Difference]: Finished difference Result 50911 states and 86289 transitions. [2024-11-18 16:17:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:17:49,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:49,954 INFO L225 Difference]: With dead ends: 50911 [2024-11-18 16:17:49,954 INFO L226 Difference]: Without dead ends: 35885 [2024-11-18 16:17:49,989 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 16:17:49,990 INFO L432 NwaCegarLoop]: 747 mSDtfsCounter, 1437 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:49,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 3062 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:17:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35885 states. [2024-11-18 16:17:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35885 to 32553. [2024-11-18 16:17:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32553 states, 30158 states have (on average 1.6370448968764506) internal successors, (49370), 30825 states have internal predecessors, (49370), 1338 states have call successors, (1338), 390 states have call predecessors, (1338), 1056 states have return successors, (5434), 1401 states have call predecessors, (5434), 1338 states have call successors, (5434) [2024-11-18 16:17:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32553 states to 32553 states and 56142 transitions. [2024-11-18 16:17:52,588 INFO L78 Accepts]: Start accepts. Automaton has 32553 states and 56142 transitions. Word has length 178 [2024-11-18 16:17:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:17:52,589 INFO L471 AbstractCegarLoop]: Abstraction has 32553 states and 56142 transitions. [2024-11-18 16:17:52,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 32553 states and 56142 transitions. [2024-11-18 16:17:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:17:52,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:17:52,604 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:17:52,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 16:17:52,605 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:17:52,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:17:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash -282427063, now seen corresponding path program 1 times [2024-11-18 16:17:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:17:52,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662825618] [2024-11-18 16:17:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:17:52,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:17:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:17:52,997 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 16:17:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:17:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662825618] [2024-11-18 16:17:52,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662825618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:17:52,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:17:52,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:17:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807936709] [2024-11-18 16:17:52,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:17:52,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:17:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:17:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:17:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:17:53,000 INFO L87 Difference]: Start difference. First operand 32553 states and 56142 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:17:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:17:57,190 INFO L93 Difference]: Finished difference Result 111575 states and 200233 transitions. [2024-11-18 16:17:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:17:57,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:17:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:17:57,794 INFO L225 Difference]: With dead ends: 111575 [2024-11-18 16:17:57,794 INFO L226 Difference]: Without dead ends: 79043 [2024-11-18 16:17:57,888 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 16:17:57,889 INFO L432 NwaCegarLoop]: 745 mSDtfsCounter, 1192 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:17:57,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3054 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:17:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79043 states. [2024-11-18 16:18:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79043 to 73218. [2024-11-18 16:18:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73218 states, 67797 states have (on average 1.669778898771332) internal successors, (113206), 69858 states have internal predecessors, (113206), 2586 states have call successors, (2586), 774 states have call predecessors, (2586), 2834 states have return successors, (18970), 2713 states have call predecessors, (18970), 2586 states have call successors, (18970) [2024-11-18 16:18:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73218 states to 73218 states and 134762 transitions. [2024-11-18 16:18:03,536 INFO L78 Accepts]: Start accepts. Automaton has 73218 states and 134762 transitions. Word has length 178 [2024-11-18 16:18:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:03,539 INFO L471 AbstractCegarLoop]: Abstraction has 73218 states and 134762 transitions. [2024-11-18 16:18:03,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 73218 states and 134762 transitions. [2024-11-18 16:18:03,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 16:18:03,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:03,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:03,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 16:18:03,568 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:03,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash 128183303, now seen corresponding path program 1 times [2024-11-18 16:18:03,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:03,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418521434] [2024-11-18 16:18:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:03,704 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 16:18:03,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:03,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418521434] [2024-11-18 16:18:03,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418521434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:03,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:03,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812126880] [2024-11-18 16:18:03,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:03,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:03,707 INFO L87 Difference]: Start difference. First operand 73218 states and 134762 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:13,992 INFO L93 Difference]: Finished difference Result 253420 states and 494235 transitions. [2024-11-18 16:18:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:13,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2024-11-18 16:18:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:15,001 INFO L225 Difference]: With dead ends: 253420 [2024-11-18 16:18:15,001 INFO L226 Difference]: Without dead ends: 180223 [2024-11-18 16:18:15,511 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 16:18:15,515 INFO L432 NwaCegarLoop]: 742 mSDtfsCounter, 1368 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:15,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 3042 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180223 states.