./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 724878768076b8192fcddec982755d081255c76c80e1e283d808e6a7ebb222b9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:11:20,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:11:20,473 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:11:20,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:11:20,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:11:20,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:11:20,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:11:20,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:11:20,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:11:20,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:11:20,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:11:20,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:11:20,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:11:20,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:11:20,522 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:11:20,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:11:20,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:11:20,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:11:20,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:11:20,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:11:20,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:11:20,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:11:20,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:11:20,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:11:20,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:11:20,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:11:20,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:11:20,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:11:20,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:11:20,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:11:20,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:11:20,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:11:20,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:11:20,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:11:20,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:11:20,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:11:20,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:11:20,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:11:20,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:11:20,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:11:20,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:11:20,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:11:20,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 724878768076b8192fcddec982755d081255c76c80e1e283d808e6a7ebb222b9 [2024-11-18 13:11:20,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:11:20,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:11:20,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:11:20,850 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:11:20,851 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:11:20,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i [2024-11-18 13:11:22,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:11:22,648 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:11:22,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i [2024-11-18 13:11:22,667 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ea7aad98/244b5c09396945b7a71eab767b45c89a/FLAGf8d117f7a [2024-11-18 13:11:22,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ea7aad98/244b5c09396945b7a71eab767b45c89a [2024-11-18 13:11:22,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:11:22,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:11:22,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:11:22,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:11:22,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:11:22,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:11:22" (1/1) ... [2024-11-18 13:11:22,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e30d4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:22, skipping insertion in model container [2024-11-18 13:11:22,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:11:22" (1/1) ... [2024-11-18 13:11:22,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:11:23,065 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i[24521,24534] [2024-11-18 13:11:23,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:11:23,078 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:11:23,130 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-1.i[24521,24534] [2024-11-18 13:11:23,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:11:23,173 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:11:23,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23 WrapperNode [2024-11-18 13:11:23,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:11:23,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:11:23,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:11:23,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:11:23,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,238 INFO L138 Inliner]: procedures = 129, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 140 [2024-11-18 13:11:23,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:11:23,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:11:23,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:11:23,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:11:23,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,272 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,296 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 6, 5]. 46 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 4 writes are split as follows [0, 3, 1]. [2024-11-18 13:11:23,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:11:23,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:11:23,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:11:23,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:11:23,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (1/1) ... [2024-11-18 13:11:23,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:11:23,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:11:23,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:11:23,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:11:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-18 13:11:23,407 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-18 13:11:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 13:11:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2024-11-18 13:11:23,408 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2024-11-18 13:11:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:11:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 13:11:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 13:11:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 13:11:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-18 13:11:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 13:11:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 13:11:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-18 13:11:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 13:11:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 13:11:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 13:11:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 13:11:23,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:11:23,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:11:23,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 13:11:23,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:11:23,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:11:23,563 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:11:23,566 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:11:23,591 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-18 13:11:23,811 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-18 13:11:23,811 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:11:23,829 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:11:23,829 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-18 13:11:23,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:11:23 BoogieIcfgContainer [2024-11-18 13:11:23,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:11:23,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:11:23,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:11:23,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:11:23,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:11:22" (1/3) ... [2024-11-18 13:11:23,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f7c35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:11:23, skipping insertion in model container [2024-11-18 13:11:23,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:11:23" (2/3) ... [2024-11-18 13:11:23,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f7c35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:11:23, skipping insertion in model container [2024-11-18 13:11:23,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:11:23" (3/3) ... [2024-11-18 13:11:23,840 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2024-11-18 13:11:23,857 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:11:23,858 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:11:23,922 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:11:23,929 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;@6ef59376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:11:23,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:11:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 41 states have internal predecessors, (58), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:11:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:11:23,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:11:23,945 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:11:23,945 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:11:23,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:11:23,950 INFO L85 PathProgramCache]: Analyzing trace with hash 674316384, now seen corresponding path program 1 times [2024-11-18 13:11:23,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:11:23,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801813280] [2024-11-18 13:11:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:11:23,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:11:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:11:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:11:24,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:11:24,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801813280] [2024-11-18 13:11:24,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801813280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:11:24,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699883345] [2024-11-18 13:11:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:11:24,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:11:24,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:11:24,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:11:24,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:11:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:11:24,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:11:24,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:11:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:11:24,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:11:24,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699883345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:11:24,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:11:24,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 13:11:24,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768470600] [2024-11-18 13:11:24,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:11:24,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:11:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:11:24,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:11:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:11:24,350 INFO L87 Difference]: Start difference. First operand has 47 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 41 states have internal predecessors, (58), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:11:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:11:24,378 INFO L93 Difference]: Finished difference Result 91 states and 131 transitions. [2024-11-18 13:11:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:11:24,381 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-18 13:11:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:11:24,388 INFO L225 Difference]: With dead ends: 91 [2024-11-18 13:11:24,388 INFO L226 Difference]: Without dead ends: 38 [2024-11-18 13:11:24,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:11:24,397 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:11:24,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:11:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-18 13:11:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-18 13:11:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:11:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2024-11-18 13:11:24,441 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 26 [2024-11-18 13:11:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:11:24,442 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-11-18 13:11:24,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:11:24,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2024-11-18 13:11:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:11:24,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:11:24,446 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:11:24,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:11:24,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 13:11:24,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:11:24,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:11:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash -170080666, now seen corresponding path program 1 times [2024-11-18 13:11:24,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:11:24,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895644318] [2024-11-18 13:11:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:11:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:11:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:11:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:11:25,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:11:25,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895644318] [2024-11-18 13:11:25,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895644318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:11:25,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579347710] [2024-11-18 13:11:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:11:25,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:11:25,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:11:25,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:11:25,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:11:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:11:25,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:11:25,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:11:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:11:25,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:11:25,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579347710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:11:25,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:11:25,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-18 13:11:25,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586697645] [2024-11-18 13:11:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:11:25,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:11:25,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:11:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:11:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:11:25,324 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:11:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:11:25,384 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-11-18 13:11:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:11:25,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2024-11-18 13:11:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:11:25,386 INFO L225 Difference]: With dead ends: 70 [2024-11-18 13:11:25,386 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 13:11:25,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:11:25,388 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:11:25,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 212 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:11:25,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 13:11:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-18 13:11:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:11:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2024-11-18 13:11:25,395 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 33 [2024-11-18 13:11:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:11:25,396 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2024-11-18 13:11:25,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:11:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2024-11-18 13:11:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 13:11:25,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:11:25,399 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:11:25,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:11:25,600 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,SelfDestructingSolverStorable1 [2024-11-18 13:11:25,601 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:11:25,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:11:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2056450253, now seen corresponding path program 1 times [2024-11-18 13:11:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:11:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019841885] [2024-11-18 13:11:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:11:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:11:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:11:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 13:11:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:11:25,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019841885] [2024-11-18 13:11:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019841885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:11:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:11:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:11:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014449053] [2024-11-18 13:11:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:11:25,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:11:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:11:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:11:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:11:25,775 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:11:25,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:11:25,882 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-11-18 13:11:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:11:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-11-18 13:11:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:11:25,884 INFO L225 Difference]: With dead ends: 67 [2024-11-18 13:11:25,884 INFO L226 Difference]: Without dead ends: 62 [2024-11-18 13:11:25,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:11:25,885 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:11:25,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 225 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:11:25,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-18 13:11:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2024-11-18 13:11:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 13:11:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-11-18 13:11:25,901 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 37 [2024-11-18 13:11:25,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:11:25,902 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-11-18 13:11:25,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:11:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-11-18 13:11:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:11:25,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:11:25,903 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:11:25,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 13:11:25,903 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:11:25,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:11:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash -622897270, now seen corresponding path program 1 times [2024-11-18 13:11:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:11:25,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251013956] [2024-11-18 13:11:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:11:25,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:11:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:11:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:11:26,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:11:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251013956] [2024-11-18 13:11:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251013956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:11:26,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:11:26,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:11:26,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278220042] [2024-11-18 13:11:26,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:11:26,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:11:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:11:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:11:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:11:26,095 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:11:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:11:26,192 INFO L93 Difference]: Finished difference Result 112 states and 147 transitions. [2024-11-18 13:11:26,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:11:26,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-11-18 13:11:26,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:11:26,195 INFO L225 Difference]: With dead ends: 112 [2024-11-18 13:11:26,195 INFO L226 Difference]: Without dead ends: 72 [2024-11-18 13:11:26,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:11:26,197 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:11:26,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 205 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:11:26,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-18 13:11:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2024-11-18 13:11:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 58 states have internal predecessors, (72), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 13:11:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2024-11-18 13:11:26,211 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 38 [2024-11-18 13:11:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:11:26,211 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2024-11-18 13:11:26,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:11:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2024-11-18 13:11:26,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:11:26,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:11:26,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:11:26,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 13:11:26,215 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:11:26,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:11:26,216 INFO L85 PathProgramCache]: Analyzing trace with hash 57161100, now seen corresponding path program 1 times [2024-11-18 13:11:26,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:11:26,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23849313] [2024-11-18 13:11:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:11:26,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:11:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:11:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:11:26,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:11:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23849313] [2024-11-18 13:11:26,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23849313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:11:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254645148] [2024-11-18 13:11:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:11:26,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:11:26,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:11:26,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:11:26,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:11:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:11:26,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:11:26,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:11:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:11:26,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:11:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:11:26,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254645148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:11:26,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:11:26,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2024-11-18 13:11:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303363578] [2024-11-18 13:11:26,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:11:26,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 13:11:26,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:11:26,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 13:11:26,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:11:26,786 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 13:11:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:11:26,946 INFO L93 Difference]: Finished difference Result 136 states and 176 transitions. [2024-11-18 13:11:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:11:26,947 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-18 13:11:26,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:11:26,948 INFO L225 Difference]: With dead ends: 136 [2024-11-18 13:11:26,948 INFO L226 Difference]: Without dead ends: 81 [2024-11-18 13:11:26,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:11:26,950 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:11:26,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 273 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:11:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-18 13:11:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2024-11-18 13:11:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 13:11:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2024-11-18 13:11:26,958 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 38 [2024-11-18 13:11:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:11:26,958 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2024-11-18 13:11:26,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 13:11:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2024-11-18 13:11:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:11:26,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:11:26,960 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:11:26,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:11:27,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:11:27,161 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:11:27,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:11:27,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1539273605, now seen corresponding path program 2 times [2024-11-18 13:11:27,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:11:27,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060649737] [2024-11-18 13:11:27,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:11:27,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:11:27,185 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:11:27,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:11:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 13:11:27,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:11:27,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060649737] [2024-11-18 13:11:27,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060649737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:11:27,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335424358] [2024-11-18 13:11:27,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:11:27,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:11:27,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:11:27,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:11:27,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:11:27,517 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:11:27,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:11:27,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 13:11:27,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:11:27,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-18 13:11:27,695 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 24 treesize of output 16 [2024-11-18 13:11:27,699 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 20 treesize of output 12 [2024-11-18 13:11:27,710 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 [2024-11-18 13:11:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:11:27,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:11:27,750 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 25 treesize of output 17 [2024-11-18 13:11:27,754 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 21 treesize of output 13 [2024-11-18 13:11:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 13:11:27,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335424358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:11:27,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:11:27,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 10 [2024-11-18 13:11:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981678114] [2024-11-18 13:11:27,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:11:27,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:11:27,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:11:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:11:27,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:11:27,786 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 13:11:31,811 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] [2024-11-18 13:11:35,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 13:11:43,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 13:11:47,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 13:11:52,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 13:11:56,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 13:12:00,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 13:12:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:00,040 INFO L93 Difference]: Finished difference Result 109 states and 135 transitions. [2024-11-18 13:12:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:12:00,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-18 13:12:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:00,043 INFO L225 Difference]: With dead ends: 109 [2024-11-18 13:12:00,043 INFO L226 Difference]: Without dead ends: 104 [2024-11-18 13:12:00,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=43, Invalid=166, Unknown=1, NotChecked=0, Total=210 [2024-11-18 13:12:00,047 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 22 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:00,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 379 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 7 Unknown, 0 Unchecked, 28.2s Time] [2024-11-18 13:12:00,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-18 13:12:00,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 83. [2024-11-18 13:12:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 75 states have internal predecessors, (92), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-18 13:12:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2024-11-18 13:12:00,060 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 42 [2024-11-18 13:12:00,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:00,061 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2024-11-18 13:12:00,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 13:12:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2024-11-18 13:12:00,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 13:12:00,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:00,062 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:00,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 13:12:00,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:00,263 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:00,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash 524495826, now seen corresponding path program 3 times [2024-11-18 13:12:00,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:00,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670482189] [2024-11-18 13:12:00,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:12:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:00,291 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:12:00,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:12:00,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670482189] [2024-11-18 13:12:00,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670482189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130845932] [2024-11-18 13:12:00,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:12:00,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:00,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:00,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:12:00,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:12:00,681 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:12:00,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:00,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-18 13:12:00,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:12:00,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:12:01,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130845932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:01,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:01,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2024-11-18 13:12:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992292703] [2024-11-18 13:12:01,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:01,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 13:12:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 13:12:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:12:01,213 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 13:12:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:01,559 INFO L93 Difference]: Finished difference Result 170 states and 220 transitions. [2024-11-18 13:12:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 13:12:01,560 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-18 13:12:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:01,561 INFO L225 Difference]: With dead ends: 170 [2024-11-18 13:12:01,561 INFO L226 Difference]: Without dead ends: 165 [2024-11-18 13:12:01,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2024-11-18 13:12:01,563 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 60 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:01,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 584 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:12:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-18 13:12:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 109. [2024-11-18 13:12:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 99 states have internal predecessors, (119), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-18 13:12:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 137 transitions. [2024-11-18 13:12:01,576 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 137 transitions. Word has length 43 [2024-11-18 13:12:01,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:01,577 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 137 transitions. [2024-11-18 13:12:01,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 13:12:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 137 transitions. [2024-11-18 13:12:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 13:12:01,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:01,579 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:01,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:12:01,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:01,783 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:01,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:01,783 INFO L85 PathProgramCache]: Analyzing trace with hash -868844251, now seen corresponding path program 4 times [2024-11-18 13:12:01,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:01,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702419162] [2024-11-18 13:12:01,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:12:01,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:01,813 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:12:01,813 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 13:12:02,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:02,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702419162] [2024-11-18 13:12:02,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702419162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:02,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230346031] [2024-11-18 13:12:02,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:12:02,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:02,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:12:02,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:12:02,431 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:12:02,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:12:02,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-18 13:12:02,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:02,452 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 6 treesize of output 5 [2024-11-18 13:12:02,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 13:12:02,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 13:12:02,554 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-18 13:12:02,555 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 [2024-11-18 13:12:02,635 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 27 treesize of output 15 [2024-11-18 13:12:02,641 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 23 treesize of output 22 [2024-11-18 13:12:03,056 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 65 treesize of output 41 [2024-11-18 13:12:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:12:03,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:03,253 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 72 treesize of output 52 [2024-11-18 13:12:03,256 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 56 treesize of output 36 [2024-11-18 13:12:07,341 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0)) (= (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| (store (select |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0))) (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| Int)) (or (= (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23| (store (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_23|) 0))))) is different from false [2024-11-18 13:12:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 4 not checked. [2024-11-18 13:12:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230346031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:07,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 24 [2024-11-18 13:12:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852246096] [2024-11-18 13:12:07,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:07,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 13:12:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 13:12:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=449, Unknown=1, NotChecked=42, Total=552 [2024-11-18 13:12:07,595 INFO L87 Difference]: Start difference. First operand 109 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:12:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:24,137 INFO L93 Difference]: Finished difference Result 178 states and 219 transitions. [2024-11-18 13:12:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 13:12:24,138 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-18 13:12:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:24,140 INFO L225 Difference]: With dead ends: 178 [2024-11-18 13:12:24,141 INFO L226 Difference]: Without dead ends: 164 [2024-11-18 13:12:24,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=87, Invalid=618, Unknown=1, NotChecked=50, Total=756 [2024-11-18 13:12:24,143 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 41 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:24,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 669 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 57 Unchecked, 0.3s Time] [2024-11-18 13:12:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-18 13:12:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 149. [2024-11-18 13:12:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 133 states have (on average 1.218045112781955) internal successors, (162), 136 states have internal predecessors, (162), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-18 13:12:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 188 transitions. [2024-11-18 13:12:24,182 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 188 transitions. Word has length 44 [2024-11-18 13:12:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:24,182 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 188 transitions. [2024-11-18 13:12:24,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:12:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 188 transitions. [2024-11-18 13:12:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:12:24,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:24,184 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:24,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 13:12:24,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:24,385 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:24,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash -246047656, now seen corresponding path program 1 times [2024-11-18 13:12:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:24,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985159365] [2024-11-18 13:12:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:24,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:12:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:12:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985159365] [2024-11-18 13:12:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985159365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:12:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017650400] [2024-11-18 13:12:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:24,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:12:24,634 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:12:24,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:12:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:12:24,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:12:24,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:12:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:12:24,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:12:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:12:25,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017650400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:12:25,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:12:25,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2024-11-18 13:12:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008719954] [2024-11-18 13:12:25,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:12:25,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 13:12:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:12:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 13:12:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-18 13:12:25,357 INFO L87 Difference]: Start difference. First operand 149 states and 188 transitions. Second operand has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 22 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 13:12:25,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:12:25,742 INFO L93 Difference]: Finished difference Result 320 states and 425 transitions. [2024-11-18 13:12:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 13:12:25,743 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 22 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2024-11-18 13:12:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:12:25,747 INFO L225 Difference]: With dead ends: 320 [2024-11-18 13:12:25,747 INFO L226 Difference]: Without dead ends: 228 [2024-11-18 13:12:25,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2024-11-18 13:12:25,748 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 72 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:12:25,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 603 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:12:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-18 13:12:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 173. [2024-11-18 13:12:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 154 states have (on average 1.2532467532467533) internal successors, (193), 159 states have internal predecessors, (193), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-18 13:12:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 223 transitions. [2024-11-18 13:12:25,783 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 223 transitions. Word has length 46 [2024-11-18 13:12:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:12:25,783 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 223 transitions. [2024-11-18 13:12:25,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 22 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 13:12:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 223 transitions. [2024-11-18 13:12:25,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:12:25,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:12:25,789 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:25,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 13:12:25,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:12:25,990 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:12:25,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:12:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1834395558, now seen corresponding path program 1 times [2024-11-18 13:12:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:12:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969226444] [2024-11-18 13:12:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:12:25,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:12:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 13:12:26,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-18 13:12:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 13:12:26,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-18 13:12:26,057 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-18 13:12:26,058 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:12:26,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 13:12:26,062 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2024-11-18 13:12:26,106 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:12:26,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:12:26 BoogieIcfgContainer [2024-11-18 13:12:26,109 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:12:26,110 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:12:26,110 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:12:26,110 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:12:26,110 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:11:23" (3/4) ... [2024-11-18 13:12:26,111 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-18 13:12:26,156 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:12:26,156 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:12:26,157 INFO L158 Benchmark]: Toolchain (without parser) took 63466.49ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 87.5MB in the beginning and 84.3MB in the end (delta: 3.2MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2024-11-18 13:12:26,157 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:12:26,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.32ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 67.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-18 13:12:26,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.16ms. Allocated memory is still 142.6MB. Free memory was 67.1MB in the beginning and 112.1MB in the end (delta: -45.0MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-11-18 13:12:26,158 INFO L158 Benchmark]: Boogie Preprocessor took 75.94ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 109.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:12:26,159 INFO L158 Benchmark]: RCFGBuilder took 515.79ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 89.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-18 13:12:26,159 INFO L158 Benchmark]: TraceAbstraction took 62276.25ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 89.0MB in the beginning and 87.4MB in the end (delta: 1.6MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2024-11-18 13:12:26,159 INFO L158 Benchmark]: Witness Printer took 46.45ms. Allocated memory is still 190.8MB. Free memory was 87.4MB in the beginning and 84.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:12:26,161 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.32ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 67.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.16ms. Allocated memory is still 142.6MB. Free memory was 67.1MB in the beginning and 112.1MB in the end (delta: -45.0MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.94ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 109.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.79ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 89.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 62276.25ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 89.0MB in the beginning and 87.4MB in the end (delta: 1.6MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. * Witness Printer took 46.45ms. Allocated memory is still 190.8MB. Free memory was 87.4MB in the beginning and 84.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 641]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L627] CALL, EXPR _get_nondet_int(2, 5) VAL [\old(from)=2, \old(until)=5] [L620] int len = from; VAL [\old(from)=2, \old(until)=5, len=2, until=5] [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() VAL [\old(from)=2, \old(until)=5, len=2, until=5] [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; VAL [\old(from)=2, \old(until)=5, \result=2, until=5] [L627] RET, EXPR _get_nondet_int(2, 5) [L627] const int len = _get_nondet_int(2, 5); [L628] SLL s = sll_create(len); [L628] CALL, EXPR sll_create(len) [L575] SLL head = ((void *)0); VAL [head={0:0}, len=2] [L576] EXPR len-- VAL [head={0:0}, len=1] [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) VAL [head={0:0}, len=1, new_head={-1:0}] [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- VAL [head={-1:0}, len=0] [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) VAL [head={-1:0}, len=0, new_head={-2:0}] [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- VAL [head={-2:0}, len=-1] [L576] COND FALSE !(len-- > 0) [L584] return head; VAL [\result={-2:0}, len=-1] [L628] RET, EXPR sll_create(len) [L628] SLL s = sll_create(len); [L629] CALL, EXPR _get_nondet_int(0, len - 1) VAL [\old(from)=0, \old(until)=1] [L620] int len = from; VAL [\old(from)=0, \old(until)=1, len=0, until=1] [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, len=0, until=1] [L621] COND TRUE len < until && __VERIFIER_nondet_int() [L622] len++ VAL [\old(from)=0, \old(until)=1, len=1, until=1] [L621] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, len=1, until=1] [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; VAL [\old(from)=0, \old(until)=1, \result=1, until=1] [L629] RET, EXPR _get_nondet_int(0, len - 1) VAL [len=2, s={3:0}] [L629] const int k = _get_nondet_int(0, len - 1); [L630] int i = 0; VAL [i=0, k=1, len=2, s={3:0}] [L631] i < k && __VERIFIER_nondet_int() [L631] i < k && __VERIFIER_nondet_int() VAL [i=0, k=1, len=2, s={3:0}] [L631] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L636] EXPR \read(s) [L636] CALL, EXPR sll_length(s) [L587] int len = 0; VAL [head={-2:0}, len=0] [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND FALSE !(\read(head)) VAL [len=2] [L592] return len; VAL [\result=2] [L636] RET, EXPR sll_length(s) [L636] COND TRUE k + len != sll_length(s) [L641] reach_error() VAL [i=0, s={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.2s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 50.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 252 SdHoareTripleChecker+Valid, 29.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 3209 SdHoareTripleChecker+Invalid, 29.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 57 IncrementalHoareTripleChecker+Unchecked, 2824 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1344 IncrementalHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 385 mSDtfsCounter, 1344 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 584 GetRequests, 437 SyntacticMatches, 9 SemanticMatches, 138 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 26.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=9, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 174 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 665 NumberOfCodeBlocks, 649 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 811 ConstructedInterpolants, 19 QuantifiedInterpolants, 5134 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1251 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 187/310 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-18 13:12:26,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE