./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_FNV_nondet_test3-1.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_FNV_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:04:53,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:04:53,220 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:04:53,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:04:53,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:04:53,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:04:53,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:04:53,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:04:53,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:04:53,250 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:04:53,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:04:53,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:04:53,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:04:53,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:04:53,251 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:04:53,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:04:53,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:04:53,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:04:53,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:04:53,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:04:53,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:04:53,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:04:53,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:04:53,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:04:53,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:04:53,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:04:53,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:04:53,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:04:53,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:04:53,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:04:53,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:04:53,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:04:53,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:04:53,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:04:53,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:04:53,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:04:53,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:04:53,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:04:53,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:04:53,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:04:53,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:04:53,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:04:53,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-11-20 13:04:53,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:04:53,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:04:53,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:04:53,476 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:04:53,476 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:04:53,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2024-11-20 13:04:54,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:04:55,070 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:04:55,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2024-11-20 13:04:55,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db4b7c625/d87439106dd24ed8ac159d2e88afc7bb/FLAGf971a38fc [2024-11-20 13:04:55,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db4b7c625/d87439106dd24ed8ac159d2e88afc7bb [2024-11-20 13:04:55,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:04:55,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:04:55,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:04:55,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:04:55,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:04:55,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:55,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b639e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55, skipping insertion in model container [2024-11-20 13:04:55,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:55,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:04:55,768 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_FNV_nondet_test3-1.i[33519,33532] [2024-11-20 13:04:55,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:04:55,879 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:04:55,905 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_FNV_nondet_test3-1.i[33519,33532] [2024-11-20 13:04:55,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:04:55,971 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:04:55,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55 WrapperNode [2024-11-20 13:04:55,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:04:55,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:04:55,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:04:55,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:04:55,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,077 INFO L138 Inliner]: procedures = 177, calls = 273, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1431 [2024-11-20 13:04:56,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:04:56,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:04:56,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:04:56,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:04:56,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,172 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 218, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-11-20 13:04:56,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:04:56,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:04:56,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:04:56,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:04:56,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (1/1) ... [2024-11-20 13:04:56,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:04:56,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:04:56,269 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 13:04:56,276 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 13:04:56,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:04:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:04:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 13:04:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 13:04:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 13:04:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:04:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:04:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 13:04:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:04:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:04:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-20 13:04:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:04:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:04:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-20 13:04:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:04:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:04:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:04:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:04:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 13:04:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:04:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:04:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:04:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 13:04:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:04:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:04:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:04:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 13:04:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:04:56,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:04:56,486 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:04:56,487 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:04:57,372 INFO L? ?]: Removed 313 outVars from TransFormulas that were not future-live. [2024-11-20 13:04:57,372 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:04:57,385 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:04:57,386 INFO L316 CfgBuilder]: Removed 63 assume(true) statements. [2024-11-20 13:04:57,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:04:57 BoogieIcfgContainer [2024-11-20 13:04:57,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:04:57,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:04:57,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:04:57,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:04:57,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:04:55" (1/3) ... [2024-11-20 13:04:57,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166f7779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:04:57, skipping insertion in model container [2024-11-20 13:04:57,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:04:55" (2/3) ... [2024-11-20 13:04:57,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166f7779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:04:57, skipping insertion in model container [2024-11-20 13:04:57,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:04:57" (3/3) ... [2024-11-20 13:04:57,392 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test3-1.i [2024-11-20 13:04:57,403 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:04:57,403 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 13:04:57,447 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:04:57,452 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;@11dcf7b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:04:57,452 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 13:04:57,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 402 states, 393 states have (on average 1.6208651399491094) internal successors, (637), 395 states have internal predecessors, (637), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 13:04:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-20 13:04:57,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:04:57,497 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:04:57,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:04:57,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:04:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash 513351899, now seen corresponding path program 1 times [2024-11-20 13:04:57,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:04:57,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564674980] [2024-11-20 13:04:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:04:57,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:04:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:04:57,620 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 13:04:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:04:57,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564674980] [2024-11-20 13:04:57,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564674980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:04:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:04:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:04:57,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733617181] [2024-11-20 13:04:57,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:04:57,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:04:57,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:04:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:04:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:04:57,644 INFO L87 Difference]: Start difference. First operand has 402 states, 393 states have (on average 1.6208651399491094) internal successors, (637), 395 states have internal predecessors, (637), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:04:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:04:57,738 INFO L93 Difference]: Finished difference Result 801 states and 1292 transitions. [2024-11-20 13:04:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:04:57,746 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-20 13:04:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:04:57,756 INFO L225 Difference]: With dead ends: 801 [2024-11-20 13:04:57,789 INFO L226 Difference]: Without dead ends: 398 [2024-11-20 13:04:57,795 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 13:04:57,800 INFO L432 NwaCegarLoop]: 579 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, 579 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 13:04:57,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:04:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-20 13:04:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-11-20 13:04:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 390 states have (on average 1.4461538461538461) internal successors, (564), 391 states have internal predecessors, (564), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 13:04:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 574 transitions. [2024-11-20 13:04:57,906 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 574 transitions. Word has length 12 [2024-11-20 13:04:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:04:57,912 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 574 transitions. [2024-11-20 13:04:57,912 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:04:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 574 transitions. [2024-11-20 13:04:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 13:04:57,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:04:57,917 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:04:57,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:04:57,918 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:04:57,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:04:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1021376642, now seen corresponding path program 1 times [2024-11-20 13:04:57,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:04:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74656230] [2024-11-20 13:04:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:04:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:04:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:04:58,114 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 13:04:58,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:04:58,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74656230] [2024-11-20 13:04:58,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74656230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:04:58,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:04:58,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:04:58,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750662483] [2024-11-20 13:04:58,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:04:58,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:04:58,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:04:58,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:04:58,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:04:58,118 INFO L87 Difference]: Start difference. First operand 398 states and 574 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:04:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:04:58,467 INFO L93 Difference]: Finished difference Result 1089 states and 1589 transitions. [2024-11-20 13:04:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:04:58,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 13:04:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:04:58,473 INFO L225 Difference]: With dead ends: 1089 [2024-11-20 13:04:58,474 INFO L226 Difference]: Without dead ends: 692 [2024-11-20 13:04:58,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:04:58,479 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 430 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:04:58,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1642 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:04:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-20 13:04:58,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 691. [2024-11-20 13:04:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 682 states have (on average 1.466275659824047) internal successors, (1000), 684 states have internal predecessors, (1000), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:04:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2024-11-20 13:04:58,523 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 14 [2024-11-20 13:04:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:04:58,523 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2024-11-20 13:04:58,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:04:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2024-11-20 13:04:58,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 13:04:58,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:04:58,526 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 13:04:58,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:04:58,527 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:04:58,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:04:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1303678867, now seen corresponding path program 1 times [2024-11-20 13:04:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:04:58,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739909615] [2024-11-20 13:04:58,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:04:58,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:04:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:04:58,735 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 13:04:58,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:04:58,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739909615] [2024-11-20 13:04:58,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739909615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:04:58,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:04:58,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:04:58,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464049727] [2024-11-20 13:04:58,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:04:58,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:04:58,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:04:58,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:04:58,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:04:58,738 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:04:58,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:04:58,826 INFO L93 Difference]: Finished difference Result 963 states and 1402 transitions. [2024-11-20 13:04:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:04:58,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 13:04:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:04:58,829 INFO L225 Difference]: With dead ends: 963 [2024-11-20 13:04:58,829 INFO L226 Difference]: Without dead ends: 607 [2024-11-20 13:04:58,829 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 13:04:58,830 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 30 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:04:58,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1397 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:04:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-20 13:04:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2024-11-20 13:04:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 598 states have (on average 1.414715719063545) internal successors, (846), 600 states have internal predecessors, (846), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:04:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 858 transitions. [2024-11-20 13:04:58,845 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 858 transitions. Word has length 68 [2024-11-20 13:04:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:04:58,845 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 858 transitions. [2024-11-20 13:04:58,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:04:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 858 transitions. [2024-11-20 13:04:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 13:04:58,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:04:58,847 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 13:04:58,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:04:58,847 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:04:58,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:04:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash 748783519, now seen corresponding path program 1 times [2024-11-20 13:04:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:04:58,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289648351] [2024-11-20 13:04:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:04:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:04:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:04:59,280 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 13:04:59,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:04:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289648351] [2024-11-20 13:04:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289648351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:04:59,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:04:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 13:04:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819817402] [2024-11-20 13:04:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:04:59,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:04:59,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:04:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:04:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:04:59,281 INFO L87 Difference]: Start difference. First operand 607 states and 858 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:04:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:04:59,418 INFO L93 Difference]: Finished difference Result 1122 states and 1555 transitions. [2024-11-20 13:04:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:04:59,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 13:04:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:04:59,422 INFO L225 Difference]: With dead ends: 1122 [2024-11-20 13:04:59,422 INFO L226 Difference]: Without dead ends: 847 [2024-11-20 13:04:59,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 13:04:59,423 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 465 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:04:59,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3004 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:04:59,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-20 13:04:59,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 606. [2024-11-20 13:04:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 597 states have (on average 1.4137353433835846) internal successors, (844), 599 states have internal predecessors, (844), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:04:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 856 transitions. [2024-11-20 13:04:59,441 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 856 transitions. Word has length 68 [2024-11-20 13:04:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:04:59,441 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 856 transitions. [2024-11-20 13:04:59,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:04:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 856 transitions. [2024-11-20 13:04:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-20 13:04:59,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:04:59,447 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] [2024-11-20 13:04:59,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:04:59,447 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:04:59,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:04:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash -695894400, now seen corresponding path program 1 times [2024-11-20 13:04:59,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:04:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907820706] [2024-11-20 13:04:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:04:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:04:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:04:59,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:04:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:04:59,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:04:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:04:59,703 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 13:04:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:04:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907820706] [2024-11-20 13:04:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907820706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:04:59,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:04:59,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:04:59,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805705734] [2024-11-20 13:04:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:04:59,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:04:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:04:59,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:04:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:04:59,708 INFO L87 Difference]: Start difference. First operand 606 states and 856 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:04:59,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:04:59,947 INFO L93 Difference]: Finished difference Result 1121 states and 1576 transitions. [2024-11-20 13:04:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:04:59,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-20 13:04:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:04:59,950 INFO L225 Difference]: With dead ends: 1121 [2024-11-20 13:04:59,950 INFO L226 Difference]: Without dead ends: 525 [2024-11-20 13:04:59,951 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 13:04:59,952 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 38 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:04:59,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1432 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 13:04:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-20 13:04:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2024-11-20 13:04:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.345029239766082) internal successors, (690), 515 states have internal predecessors, (690), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:04:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 702 transitions. [2024-11-20 13:04:59,968 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 702 transitions. Word has length 105 [2024-11-20 13:04:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:04:59,969 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 702 transitions. [2024-11-20 13:04:59,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:04:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 702 transitions. [2024-11-20 13:04:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-20 13:04:59,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:04:59,977 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] [2024-11-20 13:04:59,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:04:59,977 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:04:59,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:04:59,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2147218036, now seen corresponding path program 1 times [2024-11-20 13:04:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:04:59,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109216363] [2024-11-20 13:04:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:04:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:00,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:05:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:00,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:05:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:00,182 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 13:05:00,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:00,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109216363] [2024-11-20 13:05:00,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109216363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:00,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:00,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:05:00,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713959729] [2024-11-20 13:05:00,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:00,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:05:00,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:00,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:05:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:05:00,184 INFO L87 Difference]: Start difference. First operand 522 states and 702 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:00,415 INFO L93 Difference]: Finished difference Result 1012 states and 1371 transitions. [2024-11-20 13:05:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:05:00,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-20 13:05:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:00,418 INFO L225 Difference]: With dead ends: 1012 [2024-11-20 13:05:00,418 INFO L226 Difference]: Without dead ends: 525 [2024-11-20 13:05:00,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 13:05:00,419 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 8 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:00,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1090 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 13:05:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-20 13:05:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2024-11-20 13:05:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 515 states have internal predecessors, (684), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:05:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 696 transitions. [2024-11-20 13:05:00,435 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 696 transitions. Word has length 105 [2024-11-20 13:05:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:00,435 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 696 transitions. [2024-11-20 13:05:00,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 696 transitions. [2024-11-20 13:05:00,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-20 13:05:00,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:00,437 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] [2024-11-20 13:05:00,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 13:05:00,438 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:00,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash -236175478, now seen corresponding path program 1 times [2024-11-20 13:05:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:00,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67820608] [2024-11-20 13:05:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:00,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:05:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:00,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:05:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:05:00,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:00,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67820608] [2024-11-20 13:05:00,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67820608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:00,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767705831] [2024-11-20 13:05:00,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:00,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:00,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:00,869 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 13:05:00,870 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 13:05:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:01,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 13:05:01,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:01,172 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 13:05:01,194 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 16 treesize of output 17 [2024-11-20 13:05:01,884 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 13:05:01,884 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:01,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767705831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:01,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:01,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-20 13:05:01,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588455551] [2024-11-20 13:05:01,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:01,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:05:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:01,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:05:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:05:01,886 INFO L87 Difference]: Start difference. First operand 522 states and 696 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:03,262 INFO L93 Difference]: Finished difference Result 1242 states and 1672 transitions. [2024-11-20 13:05:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 13:05:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-20 13:05:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:03,265 INFO L225 Difference]: With dead ends: 1242 [2024-11-20 13:05:03,265 INFO L226 Difference]: Without dead ends: 765 [2024-11-20 13:05:03,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-20 13:05:03,266 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 498 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:03,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 2560 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-20 13:05:03,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-20 13:05:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 522. [2024-11-20 13:05:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.331384015594542) internal successors, (683), 515 states have internal predecessors, (683), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:05:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 695 transitions. [2024-11-20 13:05:03,277 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 695 transitions. Word has length 105 [2024-11-20 13:05:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:03,277 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 695 transitions. [2024-11-20 13:05:03,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 695 transitions. [2024-11-20 13:05:03,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-20 13:05:03,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:03,278 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] [2024-11-20 13:05:03,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 13:05:03,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:03,479 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:03,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:03,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1551969713, now seen corresponding path program 1 times [2024-11-20 13:05:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:03,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934041720] [2024-11-20 13:05:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:03,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:03,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:05:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:03,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:05:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:05:03,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:03,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934041720] [2024-11-20 13:05:03,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934041720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:03,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274189766] [2024-11-20 13:05:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:03,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:03,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:03,864 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 13:05:03,865 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 13:05:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:04,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 13:05:04,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:04,121 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 13:05:04,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2024-11-20 13:05:04,458 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 13:05:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:05:04,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:05:04,771 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 13:05:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274189766] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:04,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 13:05:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7] total 12 [2024-11-20 13:05:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989055693] [2024-11-20 13:05:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:04,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:05:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:05:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 13:05:04,774 INFO L87 Difference]: Start difference. First operand 522 states and 695 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:04,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:04,860 INFO L93 Difference]: Finished difference Result 707 states and 945 transitions. [2024-11-20 13:05:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:05:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-11-20 13:05:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:04,863 INFO L225 Difference]: With dead ends: 707 [2024-11-20 13:05:04,863 INFO L226 Difference]: Without dead ends: 696 [2024-11-20 13:05:04,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 204 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:05:04,864 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 483 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:04,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1177 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:05:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-20 13:05:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 524. [2024-11-20 13:05:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 515 states have (on average 1.3300970873786409) internal successors, (685), 517 states have internal predecessors, (685), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:05:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 697 transitions. [2024-11-20 13:05:04,881 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 697 transitions. Word has length 106 [2024-11-20 13:05:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:04,882 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 697 transitions. [2024-11-20 13:05:04,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 697 transitions. [2024-11-20 13:05:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-20 13:05:04,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:04,884 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] [2024-11-20 13:05:04,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 13:05:05,088 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,SelfDestructingSolverStorable7 [2024-11-20 13:05:05,089 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:05,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash -263526996, now seen corresponding path program 1 times [2024-11-20 13:05:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510669983] [2024-11-20 13:05:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:05,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:05:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:05,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:05:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:05,309 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 13:05:05,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:05,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510669983] [2024-11-20 13:05:05,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510669983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:05,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:05:05,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 13:05:05,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158993805] [2024-11-20 13:05:05,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:05,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:05:05,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:05:05,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:05:05,312 INFO L87 Difference]: Start difference. First operand 524 states and 697 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:05,685 INFO L93 Difference]: Finished difference Result 1305 states and 1754 transitions. [2024-11-20 13:05:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:05:05,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 160 [2024-11-20 13:05:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:05,688 INFO L225 Difference]: With dead ends: 1305 [2024-11-20 13:05:05,689 INFO L226 Difference]: Without dead ends: 873 [2024-11-20 13:05:05,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 13:05:05,690 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 1339 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:05,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 1536 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:05:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-20 13:05:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 664. [2024-11-20 13:05:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 654 states have (on average 1.3363914373088686) internal successors, (874), 657 states have internal predecessors, (874), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-20 13:05:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 888 transitions. [2024-11-20 13:05:05,707 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 888 transitions. Word has length 160 [2024-11-20 13:05:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:05,708 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 888 transitions. [2024-11-20 13:05:05,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:05,708 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 888 transitions. [2024-11-20 13:05:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-20 13:05:05,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:05,709 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] [2024-11-20 13:05:05,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 13:05:05,710 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:05,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash -377201640, now seen corresponding path program 1 times [2024-11-20 13:05:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:05,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164880706] [2024-11-20 13:05:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:05,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:06,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:05:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:06,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:05:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:05:06,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164880706] [2024-11-20 13:05:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164880706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136715658] [2024-11-20 13:05:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:06,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:06,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:06,187 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 13:05:06,188 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 13:05:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:06,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-20 13:05:06,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:06,510 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 13:05:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 13:05:07,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:05:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136715658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:05:07,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:05:07,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-20 13:05:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982212363] [2024-11-20 13:05:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:05:07,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:05:07,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:05:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:05:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:05:07,011 INFO L87 Difference]: Start difference. First operand 664 states and 888 transitions. Second operand has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:05:07,674 INFO L93 Difference]: Finished difference Result 1308 states and 1755 transitions. [2024-11-20 13:05:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 13:05:07,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2024-11-20 13:05:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:05:07,678 INFO L225 Difference]: With dead ends: 1308 [2024-11-20 13:05:07,678 INFO L226 Difference]: Without dead ends: 896 [2024-11-20 13:05:07,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-20 13:05:07,679 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 393 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 13:05:07,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 2118 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 13:05:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-11-20 13:05:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 699. [2024-11-20 13:05:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 689 states have (on average 1.3251088534107403) internal successors, (913), 692 states have internal predecessors, (913), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-20 13:05:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 927 transitions. [2024-11-20 13:05:07,703 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 927 transitions. Word has length 170 [2024-11-20 13:05:07,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:05:07,703 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 927 transitions. [2024-11-20 13:05:07,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:05:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 927 transitions. [2024-11-20 13:05:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 13:05:07,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:05:07,705 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] [2024-11-20 13:05:07,717 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 13:05:07,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:07,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:05:07,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:05:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1774879600, now seen corresponding path program 1 times [2024-11-20 13:05:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:05:07,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463941456] [2024-11-20 13:05:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:07,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:05:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:08,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:05:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:08,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:05:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:05:08,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:05:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463941456] [2024-11-20 13:05:08,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463941456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:05:08,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003637020] [2024-11-20 13:05:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:05:08,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:05:08,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:05:08,284 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 13:05:08,289 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 13:05:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:05:09,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 13:05:09,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:05:48,665 WARN L286 SmtUtils]: Spent 11.41s on a formula simplification. DAG size of input: 37 DAG size of output: 25 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-20 13:06:07,122 WARN L286 SmtUtils]: Spent 10.12s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-20 13:06:19,132 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)