./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_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:26:13,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:26:13,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 16:26:13,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:26:13,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:26:13,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:26:13,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:26:13,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:26:13,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 16:26:13,178 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 16:26:13,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:26:13,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:26:13,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:26:13,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:26:13,180 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:26:13,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:26:13,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:26:13,181 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:26:13,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:26:13,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:26:13,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:26:13,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:26:13,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:26:13,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:26:13,185 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:26:13,185 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:26:13,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:26:13,186 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:26:13,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:26:13,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:26:13,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 16:26:13,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:26:13,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:26:13,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:26:13,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:26:13,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:26:13,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:26:13,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:26:13,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:26:13,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:26:13,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:26:13,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:26:13,190 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2024-10-14 16:26:13,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:26:13,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:26:13,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:26:13,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:26:13,402 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:26:13,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2024-10-14 16:26:14,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:26:14,995 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:26:14,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2024-10-14 16:26:15,016 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ff99307/94b34eeae11f4448b6cd33cc86a8b905/FLAGf99c1f1de [2024-10-14 16:26:15,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ff99307/94b34eeae11f4448b6cd33cc86a8b905 [2024-10-14 16:26:15,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:26:15,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:26:15,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:26:15,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:26:15,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:26:15,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:15,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cff07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15, skipping insertion in model container [2024-10-14 16:26:15,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:15,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:26:15,646 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2024-10-14 16:26:15,750 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2024-10-14 16:26:15,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:26:15,776 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:26:15,804 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2024-10-14 16:26:15,885 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2024-10-14 16:26:15,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:26:15,932 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:26:15,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15 WrapperNode [2024-10-14 16:26:15,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:26:15,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:26:15,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:26:15,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:26:15,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:15,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,035 INFO L138 Inliner]: procedures = 177, calls = 472, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2351 [2024-10-14 16:26:16,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:26:16,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:26:16,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:26:16,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:26:16,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,064 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,186 INFO L175 MemorySlicer]: Split 443 memory accesses to 3 slices as follows [2, 417, 24]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 99 writes are split as follows [0, 98, 1]. [2024-10-14 16:26:16,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:26:16,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:26:16,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:26:16,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:26:16,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (1/1) ... [2024-10-14 16:26:16,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:26:16,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:26:16,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:26:16,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:26:16,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 16:26:16,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 16:26:16,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 16:26:16,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 16:26:16,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 16:26:16,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 16:26:16,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 16:26:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 16:26:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-14 16:26:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-14 16:26:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-14 16:26:16,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-14 16:26:16,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-14 16:26:16,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-14 16:26:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 16:26:16,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:26:16,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 16:26:16,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 16:26:16,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 16:26:16,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 16:26:16,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 16:26:16,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 16:26:16,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 16:26:16,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 16:26:16,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 16:26:16,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 16:26:16,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 16:26:16,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:26:16,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:26:16,562 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:26:16,564 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:26:18,098 INFO L? ?]: Removed 526 outVars from TransFormulas that were not future-live. [2024-10-14 16:26:18,098 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:26:18,154 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:26:18,154 INFO L314 CfgBuilder]: Removed 100 assume(true) statements. [2024-10-14 16:26:18,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:26:18 BoogieIcfgContainer [2024-10-14 16:26:18,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:26:18,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:26:18,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:26:18,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:26:18,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:26:15" (1/3) ... [2024-10-14 16:26:18,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480f3a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:26:18, skipping insertion in model container [2024-10-14 16:26:18,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:15" (2/3) ... [2024-10-14 16:26:18,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480f3a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:26:18, skipping insertion in model container [2024-10-14 16:26:18,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:26:18" (3/3) ... [2024-10-14 16:26:18,160 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-3.i [2024-10-14 16:26:18,173 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:26:18,173 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 16:26:18,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:26:18,234 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;@76312a5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:26:18,235 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 16:26:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 625 states, 609 states have (on average 1.632183908045977) internal successors, (994), 616 states have internal predecessors, (994), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 16:26:18,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 16:26:18,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:18,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:18,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:18,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1141857906, now seen corresponding path program 1 times [2024-10-14 16:26:18,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:18,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788853424] [2024-10-14 16:26:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:18,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:26:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788853424] [2024-10-14 16:26:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788853424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:26:18,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:26:18,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:26:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578978112] [2024-10-14 16:26:18,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:26:18,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:26:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:18,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:26:18,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:26:18,469 INFO L87 Difference]: Start difference. First operand has 625 states, 609 states have (on average 1.632183908045977) internal successors, (994), 616 states have internal predecessors, (994), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:26:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:18,601 INFO L93 Difference]: Finished difference Result 1800 states and 2944 transitions. [2024-10-14 16:26:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:26:18,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-14 16:26:18,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:18,627 INFO L225 Difference]: With dead ends: 1800 [2024-10-14 16:26:18,628 INFO L226 Difference]: Without dead ends: 1113 [2024-10-14 16:26:18,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:26:18,639 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 786 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:18,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1846 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:26:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-10-14 16:26:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 563. [2024-10-14 16:26:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 548 states have (on average 1.4598540145985401) internal successors, (800), 554 states have internal predecessors, (800), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 16:26:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 822 transitions. [2024-10-14 16:26:18,758 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 822 transitions. Word has length 7 [2024-10-14 16:26:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:18,760 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 822 transitions. [2024-10-14 16:26:18,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:26:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 822 transitions. [2024-10-14 16:26:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-10-14 16:26:18,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:18,767 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:18,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:26:18,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:18,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash 310683688, now seen corresponding path program 1 times [2024-10-14 16:26:18,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:18,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711355939] [2024-10-14 16:26:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:18,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:26:19,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:19,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711355939] [2024-10-14 16:26:19,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711355939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:26:19,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:26:19,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:26:19,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157003944] [2024-10-14 16:26:19,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:26:19,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:26:19,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:26:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:26:19,398 INFO L87 Difference]: Start difference. First operand 563 states and 822 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:26:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:19,502 INFO L93 Difference]: Finished difference Result 1082 states and 1576 transitions. [2024-10-14 16:26:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:26:19,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-10-14 16:26:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:19,507 INFO L225 Difference]: With dead ends: 1082 [2024-10-14 16:26:19,507 INFO L226 Difference]: Without dead ends: 521 [2024-10-14 16:26:19,509 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 [2024-10-14 16:26:19,510 INFO L432 NwaCegarLoop]: 716 mSDtfsCounter, 30 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:19,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2131 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:26:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-10-14 16:26:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-10-14 16:26:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 506 states have (on average 1.4288537549407114) internal successors, (723), 512 states have internal predecessors, (723), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 16:26:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 745 transitions. [2024-10-14 16:26:19,529 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 745 transitions. Word has length 207 [2024-10-14 16:26:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:19,530 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 745 transitions. [2024-10-14 16:26:19,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:26:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 745 transitions. [2024-10-14 16:26:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-10-14 16:26:19,534 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:19,535 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:19,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:26:19,535 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:19,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1228865764, now seen corresponding path program 1 times [2024-10-14 16:26:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:19,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308199381] [2024-10-14 16:26:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:19,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:26:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:19,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308199381] [2024-10-14 16:26:19,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308199381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:26:19,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:26:19,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:26:19,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418361837] [2024-10-14 16:26:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:26:19,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:26:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:26:19,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:26:19,805 INFO L87 Difference]: Start difference. First operand 521 states and 745 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:26:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:19,860 INFO L93 Difference]: Finished difference Result 1127 states and 1607 transitions. [2024-10-14 16:26:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:26:19,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-10-14 16:26:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:19,865 INFO L225 Difference]: With dead ends: 1127 [2024-10-14 16:26:19,866 INFO L226 Difference]: Without dead ends: 608 [2024-10-14 16:26:19,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:26:19,869 INFO L432 NwaCegarLoop]: 734 mSDtfsCounter, 58 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:19,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1462 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:26:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-10-14 16:26:19,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2024-10-14 16:26:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 593 states have (on average 1.418212478920742) internal successors, (841), 599 states have internal predecessors, (841), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 16:26:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 863 transitions. [2024-10-14 16:26:19,895 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 863 transitions. Word has length 207 [2024-10-14 16:26:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:19,896 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 863 transitions. [2024-10-14 16:26:19,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:26:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 863 transitions. [2024-10-14 16:26:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-14 16:26:19,900 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:19,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:19,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:26:19,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:19,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:19,903 INFO L85 PathProgramCache]: Analyzing trace with hash 499638739, now seen corresponding path program 1 times [2024-10-14 16:26:19,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:19,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945130752] [2024-10-14 16:26:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:19,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:20,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 16:26:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:20,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:26:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:26:20,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:20,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945130752] [2024-10-14 16:26:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945130752] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:26:20,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:26:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:26:20,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216577537] [2024-10-14 16:26:20,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:26:20,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 16:26:20,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 16:26:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:26:20,243 INFO L87 Difference]: Start difference. First operand 608 states and 863 transitions. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:26:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:20,591 INFO L93 Difference]: Finished difference Result 1132 states and 1617 transitions. [2024-10-14 16:26:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:26:20,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 220 [2024-10-14 16:26:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:20,594 INFO L225 Difference]: With dead ends: 1132 [2024-10-14 16:26:20,595 INFO L226 Difference]: Without dead ends: 613 [2024-10-14 16:26:20,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:26:20,598 INFO L432 NwaCegarLoop]: 701 mSDtfsCounter, 112 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:20,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2596 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:26:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-10-14 16:26:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 608. [2024-10-14 16:26:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 593 states have (on average 1.4064080944350759) internal successors, (834), 599 states have internal predecessors, (834), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 16:26:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 856 transitions. [2024-10-14 16:26:20,616 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 856 transitions. Word has length 220 [2024-10-14 16:26:20,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:20,617 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 856 transitions. [2024-10-14 16:26:20,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:26:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 856 transitions. [2024-10-14 16:26:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-14 16:26:20,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:20,620 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:20,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:26:20,620 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:20,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1999209567, now seen corresponding path program 1 times [2024-10-14 16:26:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:20,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693892221] [2024-10-14 16:26:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:20,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 16:26:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:20,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:26:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:26:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:20,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693892221] [2024-10-14 16:26:20,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693892221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:26:20,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:26:20,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:26:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528248569] [2024-10-14 16:26:20,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:26:20,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:26:20,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:20,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:26:20,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:26:20,937 INFO L87 Difference]: Start difference. First operand 608 states and 856 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:26:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:21,413 INFO L93 Difference]: Finished difference Result 1463 states and 2094 transitions. [2024-10-14 16:26:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:26:21,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 220 [2024-10-14 16:26:21,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:21,418 INFO L225 Difference]: With dead ends: 1463 [2024-10-14 16:26:21,418 INFO L226 Difference]: Without dead ends: 944 [2024-10-14 16:26:21,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:26:21,419 INFO L432 NwaCegarLoop]: 917 mSDtfsCounter, 461 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:21,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 2428 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:26:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-10-14 16:26:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 940. [2024-10-14 16:26:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 917 states have (on average 1.4242093784078518) internal successors, (1306), 928 states have internal predecessors, (1306), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-14 16:26:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1344 transitions. [2024-10-14 16:26:21,439 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1344 transitions. Word has length 220 [2024-10-14 16:26:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:21,440 INFO L471 AbstractCegarLoop]: Abstraction has 940 states and 1344 transitions. [2024-10-14 16:26:21,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:26:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1344 transitions. [2024-10-14 16:26:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-10-14 16:26:21,442 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:21,442 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:21,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:26:21,443 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:21,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:21,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1790285114, now seen corresponding path program 1 times [2024-10-14 16:26:21,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:21,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417133542] [2024-10-14 16:26:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:21,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:21,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 16:26:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:21,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:26:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:21,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-14 16:26:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:21,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-14 16:26:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:26:21,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:21,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417133542] [2024-10-14 16:26:21,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417133542] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:26:21,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576275286] [2024-10-14 16:26:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:21,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:26:21,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:26:21,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:26:21,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 16:26:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:22,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 16:26:22,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:26:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 16:26:22,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:26:22,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576275286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:26:22,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:26:22,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-14 16:26:22,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707739876] [2024-10-14 16:26:22,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:26:22,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:26:22,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:22,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:26:22,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:26:22,213 INFO L87 Difference]: Start difference. First operand 940 states and 1344 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:26:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:22,281 INFO L93 Difference]: Finished difference Result 1297 states and 1882 transitions. [2024-10-14 16:26:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:26:22,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 233 [2024-10-14 16:26:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:22,286 INFO L225 Difference]: With dead ends: 1297 [2024-10-14 16:26:22,286 INFO L226 Difference]: Without dead ends: 980 [2024-10-14 16:26:22,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:26:22,287 INFO L432 NwaCegarLoop]: 708 mSDtfsCounter, 8 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:22,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1402 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:26:22,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-10-14 16:26:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2024-10-14 16:26:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 957 states have (on average 1.406478578892372) internal successors, (1346), 968 states have internal predecessors, (1346), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-14 16:26:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1384 transitions. [2024-10-14 16:26:22,312 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1384 transitions. Word has length 233 [2024-10-14 16:26:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:22,313 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1384 transitions. [2024-10-14 16:26:22,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:26:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1384 transitions. [2024-10-14 16:26:22,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-10-14 16:26:22,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:22,315 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:22,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 16:26:22,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 16:26:22,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:22,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1132874884, now seen corresponding path program 1 times [2024-10-14 16:26:22,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:22,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011073839] [2024-10-14 16:26:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:22,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 16:26:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:22,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:26:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:22,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-14 16:26:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:22,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-14 16:26:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:26:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011073839] [2024-10-14 16:26:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011073839] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:26:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231170490] [2024-10-14 16:26:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:22,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:26:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:26:22,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:26:22,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 16:26:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:23,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 16:26:23,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:26:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 16:26:23,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:26:23,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231170490] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:26:23,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:26:23,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-14 16:26:23,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069256500] [2024-10-14 16:26:23,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:26:23,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:26:23,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:26:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:26:23,317 INFO L87 Difference]: Start difference. First operand 980 states and 1384 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:26:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:23,379 INFO L93 Difference]: Finished difference Result 1309 states and 1874 transitions. [2024-10-14 16:26:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:26:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 233 [2024-10-14 16:26:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:23,383 INFO L225 Difference]: With dead ends: 1309 [2024-10-14 16:26:23,383 INFO L226 Difference]: Without dead ends: 952 [2024-10-14 16:26:23,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 16:26:23,384 INFO L432 NwaCegarLoop]: 700 mSDtfsCounter, 105 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:23,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2009 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:26:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2024-10-14 16:26:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2024-10-14 16:26:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 929 states have (on average 1.403659849300323) internal successors, (1304), 940 states have internal predecessors, (1304), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-14 16:26:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1342 transitions. [2024-10-14 16:26:23,401 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1342 transitions. Word has length 233 [2024-10-14 16:26:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:23,402 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1342 transitions. [2024-10-14 16:26:23,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:26:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1342 transitions. [2024-10-14 16:26:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-10-14 16:26:23,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:23,404 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:23,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 16:26:23,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-14 16:26:23,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:23,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:23,607 INFO L85 PathProgramCache]: Analyzing trace with hash 618770990, now seen corresponding path program 1 times [2024-10-14 16:26:23,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:23,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841226536] [2024-10-14 16:26:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:23,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:23,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 16:26:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:23,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:26:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:23,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-14 16:26:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:23,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-14 16:26:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:26:23,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:23,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841226536] [2024-10-14 16:26:23,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841226536] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:26:23,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346901196] [2024-10-14 16:26:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:23,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:26:23,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:26:23,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:26:23,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 16:26:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:24,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 16:26:24,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:26:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:26:24,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:26:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:26:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346901196] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:26:24,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:26:24,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-10-14 16:26:24,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904900962] [2024-10-14 16:26:24,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:26:24,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 16:26:24,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:24,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 16:26:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-14 16:26:24,871 INFO L87 Difference]: Start difference. First operand 952 states and 1342 transitions. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 7 states have internal predecessors, (535), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:26:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:25,311 INFO L93 Difference]: Finished difference Result 2543 states and 3628 transitions. [2024-10-14 16:26:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:26:25,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 7 states have internal predecessors, (535), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 233 [2024-10-14 16:26:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:25,319 INFO L225 Difference]: With dead ends: 2543 [2024-10-14 16:26:25,319 INFO L226 Difference]: Without dead ends: 2213 [2024-10-14 16:26:25,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-14 16:26:25,320 INFO L432 NwaCegarLoop]: 757 mSDtfsCounter, 3304 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3351 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:25,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3351 Valid, 3927 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:26:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2024-10-14 16:26:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1699. [2024-10-14 16:26:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1661 states have (on average 1.3877182420228777) internal successors, (2305), 1672 states have internal predecessors, (2305), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 26 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-14 16:26:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2373 transitions. [2024-10-14 16:26:25,357 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2373 transitions. Word has length 233 [2024-10-14 16:26:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:25,358 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 2373 transitions. [2024-10-14 16:26:25,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 7 states have internal predecessors, (535), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:26:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2373 transitions. [2024-10-14 16:26:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2024-10-14 16:26:25,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:25,368 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:25,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 16:26:25,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:26:25,573 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:25,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1961761869, now seen corresponding path program 1 times [2024-10-14 16:26:25,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:25,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326466564] [2024-10-14 16:26:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:25,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:26:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:26,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-14 16:26:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:26,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:26:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:26,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-14 16:26:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:26,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-14 16:26:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 4 proven. 534 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2024-10-14 16:26:26,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:26:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326466564] [2024-10-14 16:26:26,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326466564] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:26:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177977371] [2024-10-14 16:26:26,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:26,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:26:26,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:26:26,760 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) [2024-10-14 16:26:26,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 16:26:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:26:27,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 16:26:27,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:26:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:26:28,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:26:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:26:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177977371] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:26:28,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:26:28,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-14 16:26:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124261278] [2024-10-14 16:26:28,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:26:28,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 16:26:28,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:26:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 16:26:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-10-14 16:26:28,803 INFO L87 Difference]: Start difference. First operand 1699 states and 2373 transitions. Second operand has 17 states, 17 states have (on average 98.05882352941177) internal successors, (1667), 16 states have internal predecessors, (1667), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-14 16:26:37,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:26:37,807 INFO L93 Difference]: Finished difference Result 16924 states and 24097 transitions. [2024-10-14 16:26:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-14 16:26:37,808 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 98.05882352941177) internal successors, (1667), 16 states have internal predecessors, (1667), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 671 [2024-10-14 16:26:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:26:37,851 INFO L225 Difference]: With dead ends: 16924 [2024-10-14 16:26:37,851 INFO L226 Difference]: Without dead ends: 15844 [2024-10-14 16:26:37,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1408 GetRequests, 1339 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1242, Invalid=3728, Unknown=0, NotChecked=0, Total=4970 [2024-10-14 16:26:37,856 INFO L432 NwaCegarLoop]: 1662 mSDtfsCounter, 41200 mSDsluCounter, 16618 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41200 SdHoareTripleChecker+Valid, 18280 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:26:37,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41200 Valid, 18280 Invalid, 3417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [668 Valid, 2749 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-10-14 16:26:37,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15844 states. [2024-10-14 16:26:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15844 to 9436. [2024-10-14 16:26:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9436 states, 9306 states have (on average 1.3852353320438426) internal successors, (12891), 9322 states have internal predecessors, (12891), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 114 states have call predecessors, (126), 126 states have call successors, (126) [2024-10-14 16:26:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9436 states to 9436 states and 13143 transitions. [2024-10-14 16:26:38,153 INFO L78 Accepts]: Start accepts. Automaton has 9436 states and 13143 transitions. Word has length 671 [2024-10-14 16:26:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:26:38,154 INFO L471 AbstractCegarLoop]: Abstraction has 9436 states and 13143 transitions. [2024-10-14 16:26:38,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 98.05882352941177) internal successors, (1667), 16 states have internal predecessors, (1667), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-14 16:26:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9436 states and 13143 transitions. [2024-10-14 16:26:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1558 [2024-10-14 16:26:38,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:26:38,227 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:26:38,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 16:26:38,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:26:38,428 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:26:38,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:26:38,429 INFO L85 PathProgramCache]: Analyzing trace with hash -936764175, now seen corresponding path program 1 times [2024-10-14 16:26:38,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:26:38,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819748488] [2024-10-14 16:26:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:26:38,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms