./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i -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 fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:19:42,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:19:42,451 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:19:42,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:19:42,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:19:42,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:19:42,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:19:42,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:19:42,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:19:42,471 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:19:42,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:19:42,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:19:42,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:19:42,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:19:42,472 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:19:42,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:19:42,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:19:42,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:19:42,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:19:42,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:19:42,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:19:42,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:19:42,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:19:42,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:19:42,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:19:42,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:19:42,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:19:42,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:19:42,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:19:42,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:19:42,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:19:42,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:19:42,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:19:42,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:19:42,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:19:42,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:19:42,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:19:42,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:19:42,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:19:42,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:19:42,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:19:42,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:19:42,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae [2024-11-20 13:19:42,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:19:42,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:19:42,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:19:42,683 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:19:42,684 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:19:42,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2024-11-20 13:19:43,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:19:44,150 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:19:44,151 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2024-11-20 13:19:44,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffca2427e/5790cdb702484a0d8d1a2802443e81fd/FLAG7054dc6cc [2024-11-20 13:19:44,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffca2427e/5790cdb702484a0d8d1a2802443e81fd [2024-11-20 13:19:44,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:19:44,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:19:44,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:19:44,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:19:44,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:19:44,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:44,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5929fb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44, skipping insertion in model container [2024-11-20 13:19:44,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:44,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:19:44,600 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/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2024-11-20 13:19:44,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:19:44,804 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:19:44,829 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/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2024-11-20 13:19:44,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:19:44,906 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:19:44,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44 WrapperNode [2024-11-20 13:19:44,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:19:44,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:19:44,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:19:44,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:19:44,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:44,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,026 INFO L138 Inliner]: procedures = 177, calls = 605, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3725 [2024-11-20 13:19:45,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:19:45,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:19:45,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:19:45,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:19:45,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,210 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 466, 106]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 98, 4]. [2024-11-20 13:19:45,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:19:45,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:19:45,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:19:45,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:19:45,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (1/1) ... [2024-11-20 13:19:45,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:19:45,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:19:45,345 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) [2024-11-20 13:19:45,347 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 [2024-11-20 13:19:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-20 13:19:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-20 13:19:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:19:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:19:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 13:19:45,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 13:19:45,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 13:19:45,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:19:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:19:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 13:19:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:19:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:19:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-20 13:19:45,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:19:45,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:19:45,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-20 13:19:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:19:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:19:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:19:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:19:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 13:19:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:19:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:19:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:19:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 13:19:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:19:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:19:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:19:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 13:19:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:19:45,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:19:45,587 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:19:45,590 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:19:47,932 INFO L? ?]: Removed 823 outVars from TransFormulas that were not future-live. [2024-11-20 13:19:47,932 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:19:47,965 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:19:47,965 INFO L316 CfgBuilder]: Removed 168 assume(true) statements. [2024-11-20 13:19:47,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:19:47 BoogieIcfgContainer [2024-11-20 13:19:47,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:19:47,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:19:47,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:19:47,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:19:47,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:19:44" (1/3) ... [2024-11-20 13:19:47,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a04d54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:19:47, skipping insertion in model container [2024-11-20 13:19:47,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:44" (2/3) ... [2024-11-20 13:19:47,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a04d54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:19:47, skipping insertion in model container [2024-11-20 13:19:47,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:19:47" (3/3) ... [2024-11-20 13:19:47,972 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-3.i [2024-11-20 13:19:47,983 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:19:47,983 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 13:19:48,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:19:48,060 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;@34ce2c78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:19:48,060 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 13:19:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 1092 states, 1073 states have (on average 1.6290773532152842) internal successors, (1748), 1078 states have internal predecessors, (1748), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-20 13:19:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-20 13:19:48,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:48,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:48,075 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:48,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:48,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2411661, now seen corresponding path program 1 times [2024-11-20 13:19:48,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:48,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927092628] [2024-11-20 13:19:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:19:48,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:48,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927092628] [2024-11-20 13:19:48,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927092628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:48,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:48,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:19:48,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371152124] [2024-11-20 13:19:48,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:48,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:19:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:19:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:19:48,254 INFO L87 Difference]: Start difference. First operand has 1092 states, 1073 states have (on average 1.6290773532152842) internal successors, (1748), 1078 states have internal predecessors, (1748), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:48,366 INFO L93 Difference]: Finished difference Result 2182 states and 3558 transitions. [2024-11-20 13:19:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:19:48,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-20 13:19:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:48,385 INFO L225 Difference]: With dead ends: 2182 [2024-11-20 13:19:48,386 INFO L226 Difference]: Without dead ends: 1026 [2024-11-20 13:19:48,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:19:48,393 INFO L432 NwaCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:48,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:19:48,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-20 13:19:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2024-11-20 13:19:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1008 states have (on average 1.4722222222222223) internal successors, (1484), 1013 states have internal predecessors, (1484), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-20 13:19:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1511 transitions. [2024-11-20 13:19:48,467 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1511 transitions. Word has length 13 [2024-11-20 13:19:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:48,467 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1511 transitions. [2024-11-20 13:19:48,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1511 transitions. [2024-11-20 13:19:48,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 13:19:48,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:48,472 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] [2024-11-20 13:19:48,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:19:48,472 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:48,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1315650717, now seen corresponding path program 1 times [2024-11-20 13:19:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:48,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112169770] [2024-11-20 13:19:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:19:48,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112169770] [2024-11-20 13:19:48,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112169770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:48,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:48,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:19:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431520215] [2024-11-20 13:19:48,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:48,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:19:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:19:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:19:48,820 INFO L87 Difference]: Start difference. First operand 1026 states and 1511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:48,977 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2024-11-20 13:19:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:19:48,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-20 13:19:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:48,983 INFO L225 Difference]: With dead ends: 2046 [2024-11-20 13:19:48,983 INFO L226 Difference]: Without dead ends: 1412 [2024-11-20 13:19:48,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:19:48,985 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 548 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:48,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4541 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:19:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-20 13:19:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1028. [2024-11-20 13:19:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1010 states have (on average 1.4712871287128713) internal successors, (1486), 1015 states have internal predecessors, (1486), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-20 13:19:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-11-20 13:19:49,018 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 68 [2024-11-20 13:19:49,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:49,018 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-11-20 13:19:49,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-11-20 13:19:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-20 13:19:49,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:49,023 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:49,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:19:49,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:49,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:49,024 INFO L85 PathProgramCache]: Analyzing trace with hash 460598544, now seen corresponding path program 1 times [2024-11-20 13:19:49,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:49,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112124772] [2024-11-20 13:19:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:49,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:19:49,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:49,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112124772] [2024-11-20 13:19:49,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112124772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:49,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:49,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 13:19:49,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844119426] [2024-11-20 13:19:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:49,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:19:49,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:49,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:19:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:19:49,491 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:49,691 INFO L93 Difference]: Finished difference Result 2436 states and 3581 transitions. [2024-11-20 13:19:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:19:49,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-20 13:19:49,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:49,696 INFO L225 Difference]: With dead ends: 2436 [2024-11-20 13:19:49,696 INFO L226 Difference]: Without dead ends: 1412 [2024-11-20 13:19:49,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:19:49,699 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 546 mSDsluCounter, 4933 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 6439 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:49,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 6439 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:19:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-20 13:19:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1031. [2024-11-20 13:19:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1013 states have (on average 1.4698914116485686) internal successors, (1489), 1018 states have internal predecessors, (1489), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-20 13:19:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1516 transitions. [2024-11-20 13:19:49,720 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1516 transitions. Word has length 145 [2024-11-20 13:19:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:49,720 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1516 transitions. [2024-11-20 13:19:49,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1516 transitions. [2024-11-20 13:19:49,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-20 13:19:49,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:49,723 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:49,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:19:49,723 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:49,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1746921408, now seen corresponding path program 1 times [2024-11-20 13:19:49,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:49,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971196277] [2024-11-20 13:19:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:19:50,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:50,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971196277] [2024-11-20 13:19:50,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971196277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:50,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:50,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:19:50,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396254948] [2024-11-20 13:19:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:50,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:19:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:50,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:19:50,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:19:50,049 INFO L87 Difference]: Start difference. First operand 1031 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:50,126 INFO L93 Difference]: Finished difference Result 2013 states and 2959 transitions. [2024-11-20 13:19:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:19:50,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-20 13:19:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:50,130 INFO L225 Difference]: With dead ends: 2013 [2024-11-20 13:19:50,130 INFO L226 Difference]: Without dead ends: 989 [2024-11-20 13:19:50,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:19:50,132 INFO L432 NwaCegarLoop]: 1409 mSDtfsCounter, 30 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:50,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4208 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:19:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-11-20 13:19:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2024-11-20 13:19:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 971 states have (on average 1.454170957775489) internal successors, (1412), 976 states have internal predecessors, (1412), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-20 13:19:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1439 transitions. [2024-11-20 13:19:50,146 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1439 transitions. Word has length 216 [2024-11-20 13:19:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:50,146 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1439 transitions. [2024-11-20 13:19:50,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1439 transitions. [2024-11-20 13:19:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-20 13:19:50,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:50,149 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:50,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:19:50,149 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:50,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1296812108, now seen corresponding path program 1 times [2024-11-20 13:19:50,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:50,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092844444] [2024-11-20 13:19:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:50,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:19:50,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:50,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092844444] [2024-11-20 13:19:50,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092844444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:50,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:50,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:19:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769667750] [2024-11-20 13:19:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:50,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:19:50,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:19:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:19:50,305 INFO L87 Difference]: Start difference. First operand 989 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:50,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:50,370 INFO L93 Difference]: Finished difference Result 2502 states and 3654 transitions. [2024-11-20 13:19:50,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:19:50,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-20 13:19:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:50,375 INFO L225 Difference]: With dead ends: 2502 [2024-11-20 13:19:50,375 INFO L226 Difference]: Without dead ends: 1520 [2024-11-20 13:19:50,376 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 [2024-11-20 13:19:50,377 INFO L432 NwaCegarLoop]: 1426 mSDtfsCounter, 716 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:50,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2834 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:19:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2024-11-20 13:19:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1361. [2024-11-20 13:19:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1341 states have (on average 1.4571215510812827) internal successors, (1954), 1346 states have internal predecessors, (1954), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-20 13:19:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1985 transitions. [2024-11-20 13:19:50,398 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1985 transitions. Word has length 216 [2024-11-20 13:19:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:50,398 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1985 transitions. [2024-11-20 13:19:50,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:19:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1985 transitions. [2024-11-20 13:19:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-20 13:19:50,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:50,401 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:50,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:19:50,401 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:50,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1169930585, now seen corresponding path program 1 times [2024-11-20 13:19:50,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:50,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956953352] [2024-11-20 13:19:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:50,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:50,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:19:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:50,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:19:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:19:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956953352] [2024-11-20 13:19:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956953352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:50,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:50,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:19:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830191290] [2024-11-20 13:19:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:50,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:19:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:50,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:19:50,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:19:50,806 INFO L87 Difference]: Start difference. First operand 1361 states and 1985 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:19:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:51,242 INFO L93 Difference]: Finished difference Result 2591 states and 3790 transitions. [2024-11-20 13:19:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:19:51,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-20 13:19:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:51,247 INFO L225 Difference]: With dead ends: 2591 [2024-11-20 13:19:51,247 INFO L226 Difference]: Without dead ends: 1322 [2024-11-20 13:19:51,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:19:51,250 INFO L432 NwaCegarLoop]: 1301 mSDtfsCounter, 53 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 5052 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:51,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 5052 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:19:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-20 13:19:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-20 13:19:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4449576597382603) internal successors, (1877), 1304 states have internal predecessors, (1877), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-20 13:19:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1908 transitions. [2024-11-20 13:19:51,271 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1908 transitions. Word has length 231 [2024-11-20 13:19:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:51,271 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1908 transitions. [2024-11-20 13:19:51,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:19:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1908 transitions. [2024-11-20 13:19:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-20 13:19:51,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:51,274 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:51,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 13:19:51,274 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:51,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:51,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1545737549, now seen corresponding path program 1 times [2024-11-20 13:19:51,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:51,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335095547] [2024-11-20 13:19:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:51,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:51,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:19:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:51,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:19:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:19:51,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:51,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335095547] [2024-11-20 13:19:51,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335095547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:51,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:51,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:19:51,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072235596] [2024-11-20 13:19:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:51,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:19:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:19:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:19:51,551 INFO L87 Difference]: Start difference. First operand 1319 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:19:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:51,986 INFO L93 Difference]: Finished difference Result 2549 states and 3702 transitions. [2024-11-20 13:19:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:19:51,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-20 13:19:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:51,992 INFO L225 Difference]: With dead ends: 2549 [2024-11-20 13:19:51,993 INFO L226 Difference]: Without dead ends: 1322 [2024-11-20 13:19:51,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:19:51,996 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 24 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:51,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3793 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:19:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-20 13:19:52,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-20 13:19:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4426481909160893) internal successors, (1874), 1304 states have internal predecessors, (1874), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-20 13:19:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1905 transitions. [2024-11-20 13:19:52,025 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1905 transitions. Word has length 231 [2024-11-20 13:19:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:52,025 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1905 transitions. [2024-11-20 13:19:52,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:19:52,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1905 transitions. [2024-11-20 13:19:52,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-20 13:19:52,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:52,027 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:52,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:19:52,027 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:52,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1022084785, now seen corresponding path program 1 times [2024-11-20 13:19:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:52,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202156604] [2024-11-20 13:19:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:52,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:19:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:52,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:19:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:19:52,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202156604] [2024-11-20 13:19:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202156604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:52,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:19:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540722207] [2024-11-20 13:19:52,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:52,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:19:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:19:52,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:19:52,326 INFO L87 Difference]: Start difference. First operand 1319 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:19:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:52,722 INFO L93 Difference]: Finished difference Result 3120 states and 4530 transitions. [2024-11-20 13:19:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:19:52,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-20 13:19:52,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:52,729 INFO L225 Difference]: With dead ends: 3120 [2024-11-20 13:19:52,729 INFO L226 Difference]: Without dead ends: 1893 [2024-11-20 13:19:52,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:19:52,732 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 619 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:52,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 4248 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:19:52,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-20 13:19:52,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1885. [2024-11-20 13:19:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1859 states have (on average 1.444862829478214) internal successors, (2686), 1864 states have internal predecessors, (2686), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-20 13:19:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2729 transitions. [2024-11-20 13:19:52,764 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2729 transitions. Word has length 231 [2024-11-20 13:19:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:52,765 INFO L471 AbstractCegarLoop]: Abstraction has 1885 states and 2729 transitions. [2024-11-20 13:19:52,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:19:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2729 transitions. [2024-11-20 13:19:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-20 13:19:52,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:52,767 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:52,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 13:19:52,767 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:52,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash 931884891, now seen corresponding path program 1 times [2024-11-20 13:19:52,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:52,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414795924] [2024-11-20 13:19:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:53,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:19:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:53,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:19:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:53,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:19:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:53,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:19:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:19:53,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:53,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414795924] [2024-11-20 13:19:53,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414795924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:53,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:53,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 13:19:53,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856523717] [2024-11-20 13:19:53,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:53,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:19:53,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:53,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:19:53,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:19:53,111 INFO L87 Difference]: Start difference. First operand 1885 states and 2729 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 13:19:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:54,223 INFO L93 Difference]: Finished difference Result 4073 states and 5947 transitions. [2024-11-20 13:19:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:19:54,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2024-11-20 13:19:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:54,232 INFO L225 Difference]: With dead ends: 4073 [2024-11-20 13:19:54,232 INFO L226 Difference]: Without dead ends: 2426 [2024-11-20 13:19:54,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:19:54,235 INFO L432 NwaCegarLoop]: 1358 mSDtfsCounter, 4642 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:54,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 4122 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 13:19:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2024-11-20 13:19:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1456. [2024-11-20 13:19:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1435 states have (on average 1.4292682926829268) internal successors, (2051), 1440 states have internal predecessors, (2051), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:19:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2084 transitions. [2024-11-20 13:19:54,274 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2084 transitions. Word has length 246 [2024-11-20 13:19:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:54,275 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2084 transitions. [2024-11-20 13:19:54,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 13:19:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2084 transitions. [2024-11-20 13:19:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-20 13:19:54,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:54,278 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:54,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 13:19:54,278 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:54,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:54,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1103108783, now seen corresponding path program 1 times [2024-11-20 13:19:54,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:54,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358640123] [2024-11-20 13:19:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:54,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:54,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:19:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:54,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:19:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:54,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:19:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:54,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:19:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 13:19:54,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:54,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358640123] [2024-11-20 13:19:54,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358640123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:54,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:54,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:19:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505127164] [2024-11-20 13:19:54,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:54,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:19:54,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:19:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:19:54,610 INFO L87 Difference]: Start difference. First operand 1456 states and 2084 transitions. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:19:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:55,044 INFO L93 Difference]: Finished difference Result 2334 states and 3394 transitions. [2024-11-20 13:19:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:19:55,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-20 13:19:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:55,049 INFO L225 Difference]: With dead ends: 2334 [2024-11-20 13:19:55,049 INFO L226 Difference]: Without dead ends: 1417 [2024-11-20 13:19:55,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:19:55,051 INFO L432 NwaCegarLoop]: 1215 mSDtfsCounter, 53 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:55,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4709 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:19:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-20 13:19:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-20 13:19:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4170854271356783) internal successors, (1974), 1398 states have internal predecessors, (1974), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:19:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2007 transitions. [2024-11-20 13:19:55,079 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2007 transitions. Word has length 256 [2024-11-20 13:19:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:55,080 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2007 transitions. [2024-11-20 13:19:55,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:19:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2007 transitions. [2024-11-20 13:19:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-20 13:19:55,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:55,082 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:55,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 13:19:55,082 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:55,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:55,083 INFO L85 PathProgramCache]: Analyzing trace with hash 324776289, now seen corresponding path program 1 times [2024-11-20 13:19:55,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:55,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063105912] [2024-11-20 13:19:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:55,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:55,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:19:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:55,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:19:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:55,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:19:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:55,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:19:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 13:19:55,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:55,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063105912] [2024-11-20 13:19:55,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063105912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:19:55,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:19:55,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:19:55,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126097892] [2024-11-20 13:19:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:19:55,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:19:55,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:19:55,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:19:55,352 INFO L87 Difference]: Start difference. First operand 1414 states and 2007 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:19:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:55,998 INFO L93 Difference]: Finished difference Result 2267 states and 3277 transitions. [2024-11-20 13:19:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:19:55,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-20 13:19:55,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:56,003 INFO L225 Difference]: With dead ends: 2267 [2024-11-20 13:19:56,004 INFO L226 Difference]: Without dead ends: 1417 [2024-11-20 13:19:56,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:19:56,005 INFO L432 NwaCegarLoop]: 1229 mSDtfsCounter, 24 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:56,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3535 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 13:19:56,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-20 13:19:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-20 13:19:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4149318018664752) internal successors, (1971), 1398 states have internal predecessors, (1971), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-20 13:19:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2004 transitions. [2024-11-20 13:19:56,037 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2004 transitions. Word has length 256 [2024-11-20 13:19:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:56,038 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2004 transitions. [2024-11-20 13:19:56,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:19:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2004 transitions. [2024-11-20 13:19:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-20 13:19:56,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:56,040 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:56,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 13:19:56,040 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:56,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1133305499, now seen corresponding path program 1 times [2024-11-20 13:19:56,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:56,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080282531] [2024-11-20 13:19:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:56,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:56,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:19:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:56,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:19:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:56,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:19:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:56,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:19:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:19:56,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:19:56,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080282531] [2024-11-20 13:19:56,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080282531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:19:56,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953988598] [2024-11-20 13:19:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:56,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:19:56,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:19:56,920 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) [2024-11-20 13:19:56,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:19:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:19:57,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 13:19:57,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:19:57,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:19:57,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:19:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:19:57,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:19:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:19:57,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953988598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:19:57,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:19:57,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 13 [2024-11-20 13:19:57,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383303566] [2024-11-20 13:19:57,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:19:57,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 13:19:57,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:19:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 13:19:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:19:57,960 INFO L87 Difference]: Start difference. First operand 1414 states and 2004 transitions. Second operand has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:19:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:19:58,839 INFO L93 Difference]: Finished difference Result 3244 states and 4587 transitions. [2024-11-20 13:19:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 13:19:58,839 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 256 [2024-11-20 13:19:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:19:58,847 INFO L225 Difference]: With dead ends: 3244 [2024-11-20 13:19:58,847 INFO L226 Difference]: Without dead ends: 2365 [2024-11-20 13:19:58,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 508 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-20 13:19:58,849 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 3073 mSDsluCounter, 7585 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3104 SdHoareTripleChecker+Valid, 9133 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 13:19:58,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3104 Valid, 9133 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 13:19:58,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2024-11-20 13:19:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2068. [2024-11-20 13:19:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2035 states have (on average 1.3862407862407862) internal successors, (2821), 2040 states have internal predecessors, (2821), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-20 13:19:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2876 transitions. [2024-11-20 13:19:58,896 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2876 transitions. Word has length 256 [2024-11-20 13:19:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:19:58,896 INFO L471 AbstractCegarLoop]: Abstraction has 2068 states and 2876 transitions. [2024-11-20 13:19:58,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:19:58,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2876 transitions. [2024-11-20 13:19:58,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-20 13:19:58,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:19:58,902 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:19:58,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 13:19:59,102 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,SelfDestructingSolverStorable11 [2024-11-20 13:19:59,103 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:19:59,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:19:59,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1066261004, now seen corresponding path program 1 times [2024-11-20 13:19:59,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:19:59,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797352739] [2024-11-20 13:19:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:19:59,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:19:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:00,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:20:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:00,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:20:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:00,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:20:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:00,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:20:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-20 13:20:00,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:20:00,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797352739] [2024-11-20 13:20:00,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797352739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:20:00,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112303921] [2024-11-20 13:20:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:00,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:20:00,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:20:00,650 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) [2024-11-20 13:20:00,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:20:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:01,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 13:20:01,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:20:01,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:20:01,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-20 13:20:01,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:20:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-20 13:20:01,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112303921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:20:01,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:20:01,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 14 [2024-11-20 13:20:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546590313] [2024-11-20 13:20:01,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:20:01,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 13:20:01,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:20:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 13:20:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:20:01,982 INFO L87 Difference]: Start difference. First operand 2068 states and 2876 transitions. Second operand has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:20:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:20:03,059 INFO L93 Difference]: Finished difference Result 3985 states and 5573 transitions. [2024-11-20 13:20:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 13:20:03,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 487 [2024-11-20 13:20:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:20:03,067 INFO L225 Difference]: With dead ends: 3985 [2024-11-20 13:20:03,067 INFO L226 Difference]: Without dead ends: 2365 [2024-11-20 13:20:03,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 971 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-20 13:20:03,069 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 2611 mSDsluCounter, 9847 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2641 SdHoareTripleChecker+Valid, 11421 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 13:20:03,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2641 Valid, 11421 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 13:20:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2024-11-20 13:20:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2071. [2024-11-20 13:20:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 2038 states have (on average 1.3846908734052994) internal successors, (2822), 2043 states have internal predecessors, (2822), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-20 13:20:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2877 transitions. [2024-11-20 13:20:03,110 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2877 transitions. Word has length 487 [2024-11-20 13:20:03,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:20:03,110 INFO L471 AbstractCegarLoop]: Abstraction has 2071 states and 2877 transitions. [2024-11-20 13:20:03,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:20:03,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2877 transitions. [2024-11-20 13:20:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2024-11-20 13:20:03,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:20:03,122 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:20:03,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 13:20:03,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 13:20:03,322 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:20:03,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:20:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2088847690, now seen corresponding path program 1 times [2024-11-20 13:20:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:20:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437985519] [2024-11-20 13:20:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:20:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:06,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:20:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:06,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:20:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:06,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:20:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:06,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:20:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:20:06,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:20:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437985519] [2024-11-20 13:20:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437985519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:20:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739116293] [2024-11-20 13:20:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:06,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:20:06,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:20:06,944 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) [2024-11-20 13:20:06,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 13:20:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:07,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 13:20:07,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:20:07,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:20:08,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:08,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:08,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:08,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:20:08,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:20:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:20:09,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739116293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:20:09,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:20:09,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2024-11-20 13:20:09,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591999444] [2024-11-20 13:20:09,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:20:09,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 13:20:09,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:20:09,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 13:20:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2024-11-20 13:20:09,181 INFO L87 Difference]: Start difference. First operand 2071 states and 2877 transitions. Second operand has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:20:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:20:11,070 INFO L93 Difference]: Finished difference Result 5002 states and 6963 transitions. [2024-11-20 13:20:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-20 13:20:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 700 [2024-11-20 13:20:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:20:11,085 INFO L225 Difference]: With dead ends: 5002 [2024-11-20 13:20:11,087 INFO L226 Difference]: Without dead ends: 4123 [2024-11-20 13:20:11,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1433 GetRequests, 1393 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 13:20:11,091 INFO L432 NwaCegarLoop]: 2682 mSDtfsCounter, 7251 mSDsluCounter, 25653 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7330 SdHoareTripleChecker+Valid, 28335 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:20:11,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7330 Valid, 28335 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 13:20:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2024-11-20 13:20:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3826. [2024-11-20 13:20:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3769 states have (on average 1.358981162111966) internal successors, (5122), 3774 states have internal predecessors, (5122), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-20 13:20:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 5225 transitions. [2024-11-20 13:20:11,166 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 5225 transitions. Word has length 700 [2024-11-20 13:20:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:20:11,167 INFO L471 AbstractCegarLoop]: Abstraction has 3826 states and 5225 transitions. [2024-11-20 13:20:11,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:20:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 5225 transitions. [2024-11-20 13:20:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2024-11-20 13:20:11,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:20:11,178 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:20:11,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 13:20:11,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:20:11,379 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:20:11,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:20:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -779114730, now seen corresponding path program 1 times [2024-11-20 13:20:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:20:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843898393] [2024-11-20 13:20:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:20:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:17,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:20:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:17,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:20:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:17,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:20:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:17,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:20:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-20 13:20:17,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:20:17,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843898393] [2024-11-20 13:20:17,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843898393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:20:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415327893] [2024-11-20 13:20:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:17,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:20:17,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:20:17,567 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) [2024-11-20 13:20:17,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 13:20:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:18,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 13:20:18,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:20:18,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:20:19,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:19,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:19,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:19,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-20 13:20:19,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:20:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-20 13:20:20,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415327893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:20:20,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:20:20,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 26 [2024-11-20 13:20:20,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945088092] [2024-11-20 13:20:20,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:20:20,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 13:20:20,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:20:20,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 13:20:20,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2024-11-20 13:20:20,191 INFO L87 Difference]: Start difference. First operand 3826 states and 5225 transitions. Second operand has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:20:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:20:22,034 INFO L93 Difference]: Finished difference Result 6622 states and 9122 transitions. [2024-11-20 13:20:22,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-20 13:20:22,035 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1162 [2024-11-20 13:20:22,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:20:22,045 INFO L225 Difference]: With dead ends: 6622 [2024-11-20 13:20:22,045 INFO L226 Difference]: Without dead ends: 4123 [2024-11-20 13:20:22,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2364 GetRequests, 2318 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2024-11-20 13:20:22,049 INFO L432 NwaCegarLoop]: 2705 mSDtfsCounter, 6276 mSDsluCounter, 25860 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6354 SdHoareTripleChecker+Valid, 28565 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:20:22,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6354 Valid, 28565 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 13:20:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2024-11-20 13:20:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3829. [2024-11-20 13:20:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3829 states, 3772 states have (on average 1.357370095440085) internal successors, (5120), 3777 states have internal predecessors, (5120), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-20 13:20:22,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3829 states to 3829 states and 5223 transitions. [2024-11-20 13:20:22,131 INFO L78 Accepts]: Start accepts. Automaton has 3829 states and 5223 transitions. Word has length 1162 [2024-11-20 13:20:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:20:22,132 INFO L471 AbstractCegarLoop]: Abstraction has 3829 states and 5223 transitions. [2024-11-20 13:20:22,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:20:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3829 states and 5223 transitions. [2024-11-20 13:20:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1589 [2024-11-20 13:20:22,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:20:22,147 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:20:22,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 13:20:22,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 13:20:22,348 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:20:22,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:20:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1684171480, now seen corresponding path program 2 times [2024-11-20 13:20:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:20:22,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959964345] [2024-11-20 13:20:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:22,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:20:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:26,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:20:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:26,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:20:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:26,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:20:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:26,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:20:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-20 13:20:26,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:20:26,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959964345] [2024-11-20 13:20:26,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959964345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:20:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181109415] [2024-11-20 13:20:26,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:20:26,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:20:26,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:20:26,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:20:26,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 13:20:27,206 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:20:27,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:20:27,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 13:20:27,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:20:27,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:20:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6668 trivial. 0 not checked. [2024-11-20 13:20:27,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:20:27,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181109415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:20:27,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:20:27,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-11-20 13:20:27,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551604843] [2024-11-20 13:20:27,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:20:27,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:20:27,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:20:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:20:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-20 13:20:27,701 INFO L87 Difference]: Start difference. First operand 3829 states and 5223 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:20:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:20:28,398 INFO L93 Difference]: Finished difference Result 4675 states and 6479 transitions. [2024-11-20 13:20:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 13:20:28,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1588 [2024-11-20 13:20:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:20:28,406 INFO L225 Difference]: With dead ends: 4675 [2024-11-20 13:20:28,406 INFO L226 Difference]: Without dead ends: 3835 [2024-11-20 13:20:28,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1610 GetRequests, 1589 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-11-20 13:20:28,408 INFO L432 NwaCegarLoop]: 1236 mSDtfsCounter, 395 mSDsluCounter, 6532 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 7768 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:20:28,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 7768 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:20:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2024-11-20 13:20:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3832. [2024-11-20 13:20:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3775 states have (on average 1.3570860927152317) internal successors, (5123), 3780 states have internal predecessors, (5123), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-20 13:20:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 5226 transitions. [2024-11-20 13:20:28,470 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 5226 transitions. Word has length 1588 [2024-11-20 13:20:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:20:28,472 INFO L471 AbstractCegarLoop]: Abstraction has 3832 states and 5226 transitions. [2024-11-20 13:20:28,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:20:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 5226 transitions. [2024-11-20 13:20:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1589 [2024-11-20 13:20:28,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:20:28,485 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:20:28,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 13:20:28,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 13:20:28,690 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:20:28,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:20:28,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1261645008, now seen corresponding path program 1 times [2024-11-20 13:20:28,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:20:28,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663137822] [2024-11-20 13:20:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:20:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:30,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:20:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:30,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:20:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:30,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:20:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:30,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:20:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6668 trivial. 0 not checked. [2024-11-20 13:20:30,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:20:30,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663137822] [2024-11-20 13:20:30,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663137822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:20:30,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:20:30,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:20:30,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695919018] [2024-11-20 13:20:30,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:20:30,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:20:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:20:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:20:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:20:30,313 INFO L87 Difference]: Start difference. First operand 3832 states and 5226 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:20:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:20:30,659 INFO L93 Difference]: Finished difference Result 4681 states and 6526 transitions. [2024-11-20 13:20:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:20:30,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1588 [2024-11-20 13:20:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:20:30,669 INFO L225 Difference]: With dead ends: 4681 [2024-11-20 13:20:30,669 INFO L226 Difference]: Without dead ends: 3829 [2024-11-20 13:20:30,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:20:30,671 INFO L432 NwaCegarLoop]: 1214 mSDtfsCounter, 32 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:20:30,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4704 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:20:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2024-11-20 13:20:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3823. [2024-11-20 13:20:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3766 states have (on average 1.35740839086564) internal successors, (5112), 3771 states have internal predecessors, (5112), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-20 13:20:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 5215 transitions. [2024-11-20 13:20:30,735 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 5215 transitions. Word has length 1588 [2024-11-20 13:20:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:20:30,736 INFO L471 AbstractCegarLoop]: Abstraction has 3823 states and 5215 transitions. [2024-11-20 13:20:30,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-20 13:20:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 5215 transitions. [2024-11-20 13:20:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2024-11-20 13:20:30,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:20:30,825 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:20:30,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 13:20:30,825 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:20:30,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:20:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1949397264, now seen corresponding path program 1 times [2024-11-20 13:20:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:20:30,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7638419] [2024-11-20 13:20:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:30,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:20:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:34,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:20:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:34,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:20:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:34,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-20 13:20:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:34,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 13:20:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-20 13:20:34,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:20:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7638419] [2024-11-20 13:20:34,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7638419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:20:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102599624] [2024-11-20 13:20:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:34,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:20:34,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:20:34,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:20:34,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 13:20:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:20:36,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 7627 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 13:20:36,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:20:36,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:20:36,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:37,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:37,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:37,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:37,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:37,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:37,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:37,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:37,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:38,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-20 13:20:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:20:38,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:20:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 13:20:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102599624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:20:39,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:20:39,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 14] total 32 [2024-11-20 13:20:39,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005517608] [2024-11-20 13:20:39,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:20:39,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-20 13:20:39,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:20:39,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-20 13:20:39,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2024-11-20 13:20:39,559 INFO L87 Difference]: Start difference. First operand 3823 states and 5215 transitions. Second operand has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:20:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:20:43,800 INFO L93 Difference]: Finished difference Result 7286 states and 10032 transitions. [2024-11-20 13:20:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-20 13:20:43,801 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1589 [2024-11-20 13:20:43,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:20:43,812 INFO L225 Difference]: With dead ends: 7286 [2024-11-20 13:20:43,812 INFO L226 Difference]: Without dead ends: 6116 [2024-11-20 13:20:43,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3240 GetRequests, 3156 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1320, Invalid=4842, Unknown=0, NotChecked=0, Total=6162 [2024-11-20 13:20:43,815 INFO L432 NwaCegarLoop]: 4750 mSDtfsCounter, 8165 mSDsluCounter, 75974 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8330 SdHoareTripleChecker+Valid, 80724 SdHoareTripleChecker+Invalid, 4358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:20:43,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8330 Valid, 80724 Invalid, 4358 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-20 13:20:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2024-11-20 13:20:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 5961. [2024-11-20 13:20:43,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5864 states have (on average 1.3415757162346522) internal successors, (7867), 5869 states have internal predecessors, (7867), 92 states have call successors, (92), 4 states have call predecessors, (92), 4 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-20 13:20:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 8050 transitions. [2024-11-20 13:20:43,917 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 8050 transitions. Word has length 1589 [2024-11-20 13:20:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:20:43,917 INFO L471 AbstractCegarLoop]: Abstraction has 5961 states and 8050 transitions. [2024-11-20 13:20:43,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-20 13:20:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 8050 transitions. [2024-11-20 13:20:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2514 [2024-11-20 13:20:43,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:20:43,948 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:20:43,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 13:20:44,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 13:20:44,150 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:20:44,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:20:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash 184383312, now seen corresponding path program 1 times [2024-11-20 13:20:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:20:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204931052] [2024-11-20 13:20:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:20:44,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:20:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat