./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/ldv-sets/test_mutex_unbounded-2.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 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:16:34,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:16:34,094 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:16:34,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:16:34,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:16:34,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:16:34,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:16:34,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:16:34,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:16:34,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:16:34,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:16:34,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:16:34,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:16:34,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:16:34,145 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:16:34,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:16:34,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:16:34,149 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:16:34,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:16:34,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:16:34,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:16:34,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:16:34,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:16:34,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:16:34,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:16:34,156 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:16:34,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:16:34,157 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:16:34,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:16:34,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:16:34,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:16:34,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:16:34,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:16:34,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:16:34,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:16:34,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:16:34,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:16:34,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:16:34,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:16:34,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:16:34,162 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:16:34,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:16:34,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2024-10-12 18:16:34,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:16:34,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:16:34,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:16:34,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:16:34,480 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:16:34,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2024-10-12 18:16:36,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:16:36,337 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:16:36,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2024-10-12 18:16:36,357 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa6c4d9c/e2e2207ffae74d538f93007b6b856dd3/FLAG472ed1dd9 [2024-10-12 18:16:36,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa6c4d9c/e2e2207ffae74d538f93007b6b856dd3 [2024-10-12 18:16:36,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:16:36,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:16:36,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:16:36,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:16:36,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:16:36,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:16:36" (1/1) ... [2024-10-12 18:16:36,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54137ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:36, skipping insertion in model container [2024-10-12 18:16:36,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:16:36" (1/1) ... [2024-10-12 18:16:36,717 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:16:37,175 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/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2024-10-12 18:16:37,185 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/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2024-10-12 18:16:37,187 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/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2024-10-12 18:16:37,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:16:37,223 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:16:37,291 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/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2024-10-12 18:16:37,292 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/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2024-10-12 18:16:37,297 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/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2024-10-12 18:16:37,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:16:37,357 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:16:37,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37 WrapperNode [2024-10-12 18:16:37,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:16:37,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:16:37,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:16:37,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:16:37,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,415 INFO L138 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 187 [2024-10-12 18:16:37,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:16:37,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:16:37,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:16:37,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:16:37,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,495 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 7 writes are split as follows [0, 7]. [2024-10-12 18:16:37,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:16:37,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:16:37,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:16:37,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:16:37,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (1/1) ... [2024-10-12 18:16:37,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:16:37,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:16:37,637 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) [2024-10-12 18:16:37,641 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 [2024-10-12 18:16:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-10-12 18:16:37,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-10-12 18:16:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2024-10-12 18:16:37,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2024-10-12 18:16:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 18:16:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:16:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-12 18:16:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-12 18:16:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-10-12 18:16:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-10-12 18:16:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-12 18:16:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-12 18:16:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 18:16:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-12 18:16:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-12 18:16:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2024-10-12 18:16:37,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2024-10-12 18:16:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:16:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 18:16:37,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-10-12 18:16:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-10-12 18:16:37,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:16:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:16:37,848 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:16:37,850 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:16:38,254 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-10-12 18:16:38,255 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:16:38,324 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:16:38,326 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-12 18:16:38,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:16:38 BoogieIcfgContainer [2024-10-12 18:16:38,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:16:38,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:16:38,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:16:38,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:16:38,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:16:36" (1/3) ... [2024-10-12 18:16:38,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e35598d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:16:38, skipping insertion in model container [2024-10-12 18:16:38,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:16:37" (2/3) ... [2024-10-12 18:16:38,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e35598d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:16:38, skipping insertion in model container [2024-10-12 18:16:38,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:16:38" (3/3) ... [2024-10-12 18:16:38,338 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2024-10-12 18:16:38,358 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:16:38,358 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-12 18:16:38,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:16:38,447 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;@f45560e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:16:38,447 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-12 18:16:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 46 states have internal predecessors, (63), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-12 18:16:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-12 18:16:38,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:16:38,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:16:38,463 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:16:38,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:16:38,470 INFO L85 PathProgramCache]: Analyzing trace with hash -196891397, now seen corresponding path program 1 times [2024-10-12 18:16:38,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:16:38,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295748412] [2024-10-12 18:16:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:16:38,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:16:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:16:38,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:16:38,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295748412] [2024-10-12 18:16:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295748412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:16:38,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:16:38,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:16:38,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578194735] [2024-10-12 18:16:38,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:16:38,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:16:38,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:16:38,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:16:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:16:38,724 INFO L87 Difference]: Start difference. First operand has 62 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 46 states have internal predecessors, (63), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-10-12 18:16:38,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:16:38,794 INFO L93 Difference]: Finished difference Result 123 states and 170 transitions. [2024-10-12 18:16:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:16:38,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-10-12 18:16:38,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:16:38,804 INFO L225 Difference]: With dead ends: 123 [2024-10-12 18:16:38,805 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 18:16:38,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:16:38,811 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:16:38,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:16:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 18:16:38,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-12 18:16:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 44 states have internal predecessors, (52), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-12 18:16:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-10-12 18:16:38,865 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 9 [2024-10-12 18:16:38,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:16:38,866 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-10-12 18:16:38,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-10-12 18:16:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-10-12 18:16:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-12 18:16:38,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:16:38,869 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:16:38,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:16:38,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:16:38,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:16:38,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1391079186, now seen corresponding path program 1 times [2024-10-12 18:16:38,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:16:38,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383623190] [2024-10-12 18:16:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:16:38,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:16:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:16:39,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:16:39,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383623190] [2024-10-12 18:16:39,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383623190] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:16:39,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:16:39,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:16:39,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145873733] [2024-10-12 18:16:39,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:16:39,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:16:39,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:16:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:16:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:16:39,051 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-12 18:16:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:16:39,250 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-10-12 18:16:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:16:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-10-12 18:16:39,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:16:39,255 INFO L225 Difference]: With dead ends: 110 [2024-10-12 18:16:39,256 INFO L226 Difference]: Without dead ends: 106 [2024-10-12 18:16:39,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:16:39,258 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 50 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:16:39,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 142 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:16:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-12 18:16:39,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2024-10-12 18:16:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 65 states have internal predecessors, (80), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-12 18:16:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2024-10-12 18:16:39,285 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 9 [2024-10-12 18:16:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:16:39,286 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2024-10-12 18:16:39,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-10-12 18:16:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2024-10-12 18:16:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-12 18:16:39,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:16:39,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:16:39,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:16:39,288 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:16:39,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:16:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1792827328, now seen corresponding path program 1 times [2024-10-12 18:16:39,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:16:39,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333077031] [2024-10-12 18:16:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:16:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:16:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:39,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 18:16:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:16:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:16:39,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333077031] [2024-10-12 18:16:39,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333077031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:16:39,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:16:39,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 18:16:39,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519432834] [2024-10-12 18:16:39,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:16:39,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:16:39,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:16:39,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:16:39,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:16:39,506 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 18:16:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:16:39,721 INFO L93 Difference]: Finished difference Result 148 states and 181 transitions. [2024-10-12 18:16:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:16:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-10-12 18:16:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:16:39,723 INFO L225 Difference]: With dead ends: 148 [2024-10-12 18:16:39,723 INFO L226 Difference]: Without dead ends: 71 [2024-10-12 18:16:39,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:16:39,724 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 13 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:16:39,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 151 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:16:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-12 18:16:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-10-12 18:16:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 49 states have internal predecessors, (56), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-12 18:16:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-10-12 18:16:39,742 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 13 [2024-10-12 18:16:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:16:39,742 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-10-12 18:16:39,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 18:16:39,743 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-10-12 18:16:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-12 18:16:39,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:16:39,744 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] [2024-10-12 18:16:39,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 18:16:39,744 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:16:39,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:16:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1995733173, now seen corresponding path program 1 times [2024-10-12 18:16:39,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:16:39,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764442720] [2024-10-12 18:16:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:16:39,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:16:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:40,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:16:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:40,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 18:16:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:40,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:16:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:16:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:16:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764442720] [2024-10-12 18:16:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764442720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:16:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457878893] [2024-10-12 18:16:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:16:40,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:16:40,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:16:40,607 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) [2024-10-12 18:16:40,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:16:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:40,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-12 18:16:40,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:16:40,960 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 18:16:40,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 18:16:41,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2024-10-12 18:16:41,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-12 18:16:41,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-10-12 18:16:41,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-12 18:16:41,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 39 [2024-10-12 18:16:41,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-12 18:16:41,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 44 [2024-10-12 18:16:41,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-12 18:16:41,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:16:41,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-10-12 18:16:41,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-12 18:16:41,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-10-12 18:16:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:16:41,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:16:41,983 INFO L349 Elim1Store]: treesize reduction 17, result has 64.6 percent of original size [2024-10-12 18:16:41,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 394 treesize of output 337 [2024-10-12 18:16:42,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 18:16:42,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 231 [2024-10-12 18:16:42,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2024-10-12 18:16:42,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 194 [2024-10-12 18:16:42,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-12 18:16:42,308 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-12 18:16:42,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:16:42,314 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-10-12 18:16:42,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2024-10-12 18:16:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:16:42,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457878893] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:16:42,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:16:42,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2024-10-12 18:16:42,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701940517] [2024-10-12 18:16:42,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:16:42,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 18:16:42,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:16:42,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 18:16:42,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:16:42,466 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 32 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 24 states have internal predecessors, (37), 7 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-12 18:16:44,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:16:44,166 INFO L93 Difference]: Finished difference Result 152 states and 182 transitions. [2024-10-12 18:16:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 18:16:44,167 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 24 states have internal predecessors, (37), 7 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 24 [2024-10-12 18:16:44,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:16:44,168 INFO L225 Difference]: With dead ends: 152 [2024-10-12 18:16:44,169 INFO L226 Difference]: Without dead ends: 126 [2024-10-12 18:16:44,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=347, Invalid=2305, Unknown=0, NotChecked=0, Total=2652 [2024-10-12 18:16:44,171 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 441 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:16:44,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 546 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 18:16:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-12 18:16:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 103. [2024-10-12 18:16:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 79 states have internal predecessors, (94), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-12 18:16:44,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2024-10-12 18:16:44,202 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 24 [2024-10-12 18:16:44,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:16:44,205 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2024-10-12 18:16:44,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 24 states have internal predecessors, (37), 7 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-12 18:16:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2024-10-12 18:16:44,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 18:16:44,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:16:44,206 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] [2024-10-12 18:16:44,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 18:16:44,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:16:44,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:16:44,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:16:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1375980551, now seen corresponding path program 1 times [2024-10-12 18:16:44,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:16:44,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375090383] [2024-10-12 18:16:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:16:44,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:16:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:44,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:16:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:44,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 18:16:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:44,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:16:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:44,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:16:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:16:44,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:16:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375090383] [2024-10-12 18:16:44,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375090383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:16:44,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:16:44,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 18:16:44,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570509848] [2024-10-12 18:16:44,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:16:44,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:16:44,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:16:44,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:16:44,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:16:44,539 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-12 18:16:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:16:44,725 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2024-10-12 18:16:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:16:44,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2024-10-12 18:16:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:16:44,727 INFO L225 Difference]: With dead ends: 115 [2024-10-12 18:16:44,727 INFO L226 Difference]: Without dead ends: 113 [2024-10-12 18:16:44,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:16:44,730 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 24 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:16:44,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 181 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:16:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-12 18:16:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2024-10-12 18:16:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 80 states have (on average 1.25) internal successors, (100), 85 states have internal predecessors, (100), 16 states have call successors, (16), 10 states have call predecessors, (16), 12 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2024-10-12 18:16:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2024-10-12 18:16:44,751 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 28 [2024-10-12 18:16:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:16:44,751 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2024-10-12 18:16:44,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-12 18:16:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2024-10-12 18:16:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 18:16:44,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:16:44,752 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] [2024-10-12 18:16:44,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 18:16:44,753 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:16:44,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:16:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1344383440, now seen corresponding path program 1 times [2024-10-12 18:16:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:16:44,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920139791] [2024-10-12 18:16:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:16:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:16:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:45,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:16:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:45,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 18:16:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:46,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:16:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:47,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 18:16:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:16:47,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:16:47,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920139791] [2024-10-12 18:16:47,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920139791] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:16:47,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59835248] [2024-10-12 18:16:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:16:47,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:16:47,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:16:47,953 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) [2024-10-12 18:16:47,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:16:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:16:48,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-10-12 18:16:48,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:16:48,472 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-12 18:16:48,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-10-12 18:16:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:16:53,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2024-10-12 18:16:53,596 INFO L349 Elim1Store]: treesize reduction 98, result has 15.5 percent of original size [2024-10-12 18:16:53,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 125 [2024-10-12 18:16:53,677 INFO L349 Elim1Store]: treesize reduction 87, result has 29.8 percent of original size [2024-10-12 18:16:53,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 109 [2024-10-12 18:16:53,741 INFO L349 Elim1Store]: treesize reduction 60, result has 27.7 percent of original size [2024-10-12 18:16:53,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 141 treesize of output 129 [2024-10-12 18:16:53,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 36 [2024-10-12 18:16:53,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2024-10-12 18:16:53,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2024-10-12 18:16:54,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2024-10-12 18:16:54,039 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-12 18:16:54,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 180 [2024-10-12 18:16:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:16:56,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:16:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59835248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:16:57,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:16:57,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-10-12 18:16:57,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336142251] [2024-10-12 18:16:57,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:16:57,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 18:16:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:16:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 18:16:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=835, Unknown=4, NotChecked=0, Total=930 [2024-10-12 18:16:57,372 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 28 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-12 18:17:06,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-12 18:17:26,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-12 18:17:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:17:36,688 INFO L93 Difference]: Finished difference Result 277 states and 350 transitions. [2024-10-12 18:17:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 18:17:36,689 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 28 [2024-10-12 18:17:36,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:17:36,692 INFO L225 Difference]: With dead ends: 277 [2024-10-12 18:17:36,692 INFO L226 Difference]: Without dead ends: 181 [2024-10-12 18:17:36,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=330, Invalid=2736, Unknown=14, NotChecked=0, Total=3080 [2024-10-12 18:17:36,696 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 155 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 68 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-10-12 18:17:36,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 520 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1237 Invalid, 13 Unknown, 0 Unchecked, 13.9s Time] [2024-10-12 18:17:36,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-12 18:17:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 138. [2024-10-12 18:17:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 105 states have internal predecessors, (123), 20 states have call successors, (20), 13 states have call predecessors, (20), 16 states have return successors, (26), 19 states have call predecessors, (26), 20 states have call successors, (26) [2024-10-12 18:17:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 169 transitions. [2024-10-12 18:17:36,745 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 169 transitions. Word has length 28 [2024-10-12 18:17:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:17:36,746 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 169 transitions. [2024-10-12 18:17:36,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 20 states have (on average 1.85) internal successors, (37), 21 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-12 18:17:36,746 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 169 transitions. [2024-10-12 18:17:36,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-12 18:17:36,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:17:36,748 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:17:36,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 18:17:36,950 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,SelfDestructingSolverStorable5 [2024-10-12 18:17:36,951 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:17:36,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:17:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash -823790839, now seen corresponding path program 2 times [2024-10-12 18:17:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:17:36,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181736228] [2024-10-12 18:17:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:17:36,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:17:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:17:38,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 18:17:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:17:38,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 18:17:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:17:38,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:17:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:17:38,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 18:17:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:17:38,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 18:17:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:17:39,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:17:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:17:41,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 18:17:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:17:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:17:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:17:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181736228] [2024-10-12 18:17:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181736228] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:17:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52194163] [2024-10-12 18:17:41,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:17:41,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:17:41,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:17:41,442 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) [2024-10-12 18:17:41,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:17:41,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:17:41,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:17:41,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-10-12 18:17:41,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:17:42,034 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-12 18:17:42,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-12 18:17:42,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 59 [2024-10-12 18:17:42,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-10-12 18:17:42,755 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-10-12 18:17:42,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-10-12 18:17:42,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2024-10-12 18:17:42,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-12 18:17:42,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-12 18:17:44,008 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 18:17:44,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 18:17:45,021 INFO L349 Elim1Store]: treesize reduction 262, result has 22.3 percent of original size [2024-10-12 18:17:45,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 254 treesize of output 301 [2024-10-12 18:17:45,075 INFO L349 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2024-10-12 18:17:45,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 153 [2024-10-12 18:17:45,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 131 [2024-10-12 18:17:45,142 INFO L349 Elim1Store]: treesize reduction 104, result has 4.6 percent of original size [2024-10-12 18:17:45,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 114 [2024-10-12 18:17:45,395 INFO L349 Elim1Store]: treesize reduction 422, result has 19.6 percent of original size [2024-10-12 18:17:45,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 253 treesize of output 358 [2024-10-12 18:17:46,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 118 [2024-10-12 18:17:46,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 327 [2024-10-12 18:17:47,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:17:47,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-10-12 18:17:47,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:17:47,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-10-12 18:17:48,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 469 treesize of output 453 [2024-10-12 18:17:55,517 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-10-12 18:17:55,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 17 [2024-10-12 18:17:55,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:17:55,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:17:55,611 INFO L349 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2024-10-12 18:17:55,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 59 [2024-10-12 18:17:55,815 INFO L349 Elim1Store]: treesize reduction 85, result has 21.3 percent of original size [2024-10-12 18:17:55,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 84 [2024-10-12 18:17:56,069 INFO L349 Elim1Store]: treesize reduction 83, result has 20.2 percent of original size [2024-10-12 18:17:56,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 74 [2024-10-12 18:17:56,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:17:56,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:17:56,374 INFO L349 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2024-10-12 18:17:56,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 56 [2024-10-12 18:17:56,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:17:56,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-12 18:17:56,732 INFO L349 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2024-10-12 18:17:56,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 49 [2024-10-12 18:17:56,812 INFO L349 Elim1Store]: treesize reduction 85, result has 21.3 percent of original size [2024-10-12 18:17:56,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 75 [2024-10-12 18:17:57,313 INFO L349 Elim1Store]: treesize reduction 30, result has 43.4 percent of original size [2024-10-12 18:17:57,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 136