./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/array-industry-pattern/array_single_elem_init.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 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:00:48,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:00:48,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:00:48,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:00:48,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:00:48,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:00:48,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:00:48,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:00:48,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:00:48,375 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:00:48,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:00:48,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:00:48,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:00:48,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:00:48,377 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:00:48,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:00:48,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:00:48,378 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:00:48,379 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:00:48,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:00:48,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:00:48,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:00:48,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:00:48,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:00:48,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:00:48,383 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:00:48,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:00:48,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:00:48,384 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:00:48,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:00:48,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:00:48,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:00:48,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:00:48,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:00:48,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:00:48,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:00:48,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:00:48,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:00:48,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:00:48,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:00:48,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:00:48,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:00:48,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 [2024-11-09 18:00:48,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:00:48,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:00:48,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:00:48,672 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:00:48,673 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:00:48,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-09 18:00:50,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:00:50,363 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:00:50,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-09 18:00:50,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848bd2eb8/671d69a07bde49ad80d0e77e77e36560/FLAG796a68d27 [2024-11-09 18:00:50,385 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/848bd2eb8/671d69a07bde49ad80d0e77e77e36560 [2024-11-09 18:00:50,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:00:50,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:00:50,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:00:50,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:00:50,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:00:50,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b459017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50, skipping insertion in model container [2024-11-09 18:00:50,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,416 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:00:50,581 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/array-industry-pattern/array_single_elem_init.i[815,828] [2024-11-09 18:00:50,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:00:50,607 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:00:50,617 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/array-industry-pattern/array_single_elem_init.i[815,828] [2024-11-09 18:00:50,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:00:50,645 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:00:50,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50 WrapperNode [2024-11-09 18:00:50,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:00:50,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:00:50,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:00:50,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:00:50,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,684 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-09 18:00:50,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:00:50,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:00:50,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:00:50,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:00:50,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,710 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 2, 3, 4]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 1, 2, 3]. [2024-11-09 18:00:50,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,716 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:00:50,722 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:00:50,722 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:00:50,722 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:00:50,723 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (1/1) ... [2024-11-09 18:00:50,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:00:50,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:50,761 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) [2024-11-09 18:00:50,776 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 [2024-11-09 18:00:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:00:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:00:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:00:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:00:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:00:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:00:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:00:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:00:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:00:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:00:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:00:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:00:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:00:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:00:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:00:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:00:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:00:50,921 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:00:50,940 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:00:51,156 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2024-11-09 18:00:51,167 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 18:00:51,169 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:00:51,183 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:00:51,183 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:00:51,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:00:51 BoogieIcfgContainer [2024-11-09 18:00:51,184 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:00:51,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:00:51,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:00:51,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:00:51,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:00:50" (1/3) ... [2024-11-09 18:00:51,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caa42bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:51, skipping insertion in model container [2024-11-09 18:00:51,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:50" (2/3) ... [2024-11-09 18:00:51,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caa42bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:51, skipping insertion in model container [2024-11-09 18:00:51,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:00:51" (3/3) ... [2024-11-09 18:00:51,195 INFO L112 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2024-11-09 18:00:51,213 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:00:51,213 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:00:51,283 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:00:51,291 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;@59ab0201, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:00:51,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:00:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 18:00:51,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:51,302 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:51,303 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:51,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash -202091506, now seen corresponding path program 1 times [2024-11-09 18:00:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:51,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994144811] [2024-11-09 18:00:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:00:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:51,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994144811] [2024-11-09 18:00:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994144811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:00:51,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:00:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:00:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334710066] [2024-11-09 18:00:51,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:00:51,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:00:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:51,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:00:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:00:51,517 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:51,532 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-11-09 18:00:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:00:51,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 18:00:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:51,539 INFO L225 Difference]: With dead ends: 38 [2024-11-09 18:00:51,539 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 18:00:51,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:00:51,545 INFO L432 NwaCegarLoop]: 28 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, 28 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 [2024-11-09 18:00:51,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:00:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 18:00:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 18:00:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-09 18:00:51,570 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2024-11-09 18:00:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:51,571 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-09 18:00:51,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-09 18:00:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 18:00:51,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:51,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:51,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:00:51,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:51,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1892286897, now seen corresponding path program 1 times [2024-11-09 18:00:51,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:51,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844035116] [2024-11-09 18:00:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:51,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:00:51,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:51,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844035116] [2024-11-09 18:00:51,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844035116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:00:51,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:00:51,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:00:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791262516] [2024-11-09 18:00:51,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:00:51,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:00:51,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:00:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:00:51,713 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:51,780 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-11-09 18:00:51,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:00:51,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 18:00:51,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:51,782 INFO L225 Difference]: With dead ends: 40 [2024-11-09 18:00:51,782 INFO L226 Difference]: Without dead ends: 30 [2024-11-09 18:00:51,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:00:51,784 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:51,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:00:51,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-09 18:00:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2024-11-09 18:00:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-09 18:00:51,795 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 11 [2024-11-09 18:00:51,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:51,795 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-09 18:00:51,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-09 18:00:51,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 18:00:51,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:51,798 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:51,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:00:51,798 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:51,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:51,799 INFO L85 PathProgramCache]: Analyzing trace with hash 939919917, now seen corresponding path program 1 times [2024-11-09 18:00:51,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:51,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878565991] [2024-11-09 18:00:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:51,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:00:52,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:52,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878565991] [2024-11-09 18:00:52,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878565991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:00:52,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:00:52,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:00:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369560194] [2024-11-09 18:00:52,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:00:52,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:00:52,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:00:52,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:00:52,026 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:52,092 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-09 18:00:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:00:52,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 18:00:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:52,093 INFO L225 Difference]: With dead ends: 48 [2024-11-09 18:00:52,093 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 18:00:52,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:00:52,095 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:52,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 48 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:00:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 18:00:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-09 18:00:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-09 18:00:52,101 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2024-11-09 18:00:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:52,102 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-09 18:00:52,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-09 18:00:52,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 18:00:52,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:52,104 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:52,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:00:52,106 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:52,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2001737682, now seen corresponding path program 1 times [2024-11-09 18:00:52,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:52,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498413101] [2024-11-09 18:00:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:00:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498413101] [2024-11-09 18:00:52,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498413101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:00:52,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672871103] [2024-11-09 18:00:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:52,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:52,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:52,230 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) [2024-11-09 18:00:52,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:00:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:52,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:00:52,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:00:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:00:52,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:00:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:00:52,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672871103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:00:52,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:00:52,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 18:00:52,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430728847] [2024-11-09 18:00:52,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:00:52,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:00:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:00:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:00:52,441 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:52,561 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2024-11-09 18:00:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 18:00:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 18:00:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:52,563 INFO L225 Difference]: With dead ends: 77 [2024-11-09 18:00:52,564 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 18:00:52,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:00:52,566 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:52,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 43 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:00:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 18:00:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2024-11-09 18:00:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2024-11-09 18:00:52,581 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 21 [2024-11-09 18:00:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:52,581 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2024-11-09 18:00:52,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2024-11-09 18:00:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 18:00:52,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:52,583 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:52,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:00:52,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:52,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:52,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:52,790 INFO L85 PathProgramCache]: Analyzing trace with hash -991030919, now seen corresponding path program 2 times [2024-11-09 18:00:52,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:52,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407340914] [2024-11-09 18:00:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:52,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:00:52,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:52,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407340914] [2024-11-09 18:00:52,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407340914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:00:52,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942167401] [2024-11-09 18:00:52,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:00:52,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:52,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:52,945 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) [2024-11-09 18:00:52,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:00:53,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:00:53,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:00:53,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:00:53,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:00:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:00:53,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:00:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:00:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942167401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:00:53,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:00:53,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 18:00:53,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536849979] [2024-11-09 18:00:53,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:00:53,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 18:00:53,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 18:00:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 18:00:53,246 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:53,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:53,464 INFO L93 Difference]: Finished difference Result 159 states and 205 transitions. [2024-11-09 18:00:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:00:53,465 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-09 18:00:53,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:53,469 INFO L225 Difference]: With dead ends: 159 [2024-11-09 18:00:53,471 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 18:00:53,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 18:00:53,472 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 242 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:53,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 76 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:00:53,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 18:00:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 123. [2024-11-09 18:00:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 122 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2024-11-09 18:00:53,487 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 43 [2024-11-09 18:00:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:53,488 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2024-11-09 18:00:53,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2024-11-09 18:00:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 18:00:53,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:53,491 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:53,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:00:53,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:53,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:53,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash -988762075, now seen corresponding path program 3 times [2024-11-09 18:00:53,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:53,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984863665] [2024-11-09 18:00:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:53,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:00:53,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:53,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984863665] [2024-11-09 18:00:53,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984863665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:00:53,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39340489] [2024-11-09 18:00:53,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:00:53,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:53,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:53,989 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) [2024-11-09 18:00:53,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:00:54,090 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 18:00:54,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:00:54,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 18:00:54,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:00:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-09 18:00:54,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:00:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-09 18:00:54,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39340489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:00:54,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:00:54,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-11-09 18:00:54,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819477165] [2024-11-09 18:00:54,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:00:54,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 18:00:54,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:54,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 18:00:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:00:54,309 INFO L87 Difference]: Start difference. First operand 123 states and 155 transitions. Second operand has 20 states, 20 states have (on average 6.45) internal successors, (129), 20 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:54,604 INFO L93 Difference]: Finished difference Result 271 states and 347 transitions. [2024-11-09 18:00:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 18:00:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.45) internal successors, (129), 20 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-09 18:00:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:54,607 INFO L225 Difference]: With dead ends: 271 [2024-11-09 18:00:54,607 INFO L226 Difference]: Without dead ends: 242 [2024-11-09 18:00:54,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2024-11-09 18:00:54,608 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 204 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:54,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 122 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:00:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-09 18:00:54,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 234. [2024-11-09 18:00:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.2317596566523605) internal successors, (287), 233 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:54,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2024-11-09 18:00:54,623 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 91 [2024-11-09 18:00:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:54,623 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2024-11-09 18:00:54,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.45) internal successors, (129), 20 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2024-11-09 18:00:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-09 18:00:54,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:54,626 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:54,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:00:54,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:54,827 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:54,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1273353726, now seen corresponding path program 4 times [2024-11-09 18:00:54,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:54,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051757386] [2024-11-09 18:00:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:54,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-09 18:00:55,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:55,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051757386] [2024-11-09 18:00:55,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051757386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:00:55,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168840250] [2024-11-09 18:00:55,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:00:55,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:55,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:55,536 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) [2024-11-09 18:00:55,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:00:55,679 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:00:55,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:00:55,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:00:55,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:00:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-09 18:00:55,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:00:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-09 18:00:56,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168840250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:00:56,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:00:56,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-11-09 18:00:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226898759] [2024-11-09 18:00:56,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:00:56,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 18:00:56,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:00:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 18:00:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 18:00:56,536 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:00:57,132 INFO L93 Difference]: Finished difference Result 557 states and 705 transitions. [2024-11-09 18:00:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 18:00:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-09 18:00:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:00:57,136 INFO L225 Difference]: With dead ends: 557 [2024-11-09 18:00:57,136 INFO L226 Difference]: Without dead ends: 480 [2024-11-09 18:00:57,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 18:00:57,141 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 687 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:00:57,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 189 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:00:57,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-09 18:00:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 409. [2024-11-09 18:00:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.2720588235294117) internal successors, (519), 408 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 519 transitions. [2024-11-09 18:00:57,177 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 519 transitions. Word has length 181 [2024-11-09 18:00:57,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:00:57,177 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 519 transitions. [2024-11-09 18:00:57,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:00:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 519 transitions. [2024-11-09 18:00:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-09 18:00:57,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:00:57,189 INFO L215 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:00:57,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:00:57,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:57,390 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:00:57,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:00:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash 237547449, now seen corresponding path program 5 times [2024-11-09 18:00:57,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:00:57,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312057828] [2024-11-09 18:00:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:00:57,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:00:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:00:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2024-11-09 18:00:59,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:00:59,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312057828] [2024-11-09 18:00:59,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312057828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:00:59,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841237271] [2024-11-09 18:00:59,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:00:59,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:00:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:00:59,168 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) [2024-11-09 18:00:59,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:01:06,407 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-09 18:01:06,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:01:06,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 18:01:06,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:01:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3852 trivial. 0 not checked. [2024-11-09 18:01:06,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:01:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3852 trivial. 0 not checked. [2024-11-09 18:01:07,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841237271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:01:07,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:01:07,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 21, 21] total 59 [2024-11-09 18:01:07,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12985677] [2024-11-09 18:01:07,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:01:07,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-09 18:01:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:01:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-09 18:01:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:01:07,367 INFO L87 Difference]: Start difference. First operand 409 states and 519 transitions. Second operand has 59 states, 59 states have (on average 6.593220338983051) internal successors, (389), 59 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:01:08,453 INFO L93 Difference]: Finished difference Result 830 states and 1062 transitions. [2024-11-09 18:01:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-09 18:01:08,454 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.593220338983051) internal successors, (389), 59 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2024-11-09 18:01:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:01:08,457 INFO L225 Difference]: With dead ends: 830 [2024-11-09 18:01:08,457 INFO L226 Difference]: Without dead ends: 749 [2024-11-09 18:01:08,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:01:08,461 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1534 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:01:08,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 254 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:01:08,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-09 18:01:08,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 741. [2024-11-09 18:01:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.231081081081081) internal successors, (911), 740 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 911 transitions. [2024-11-09 18:01:08,490 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 911 transitions. Word has length 299 [2024-11-09 18:01:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:01:08,490 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 911 transitions. [2024-11-09 18:01:08,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.593220338983051) internal successors, (389), 59 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:01:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 911 transitions. [2024-11-09 18:01:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2024-11-09 18:01:08,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:01:08,500 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:01:08,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:01:08,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:08,701 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:01:08,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:01:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1153908727, now seen corresponding path program 6 times [2024-11-09 18:01:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:01:08,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796303702] [2024-11-09 18:01:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:01:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:01:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:01:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15680 backedges. 0 proven. 9352 refuted. 0 times theorem prover too weak. 6328 trivial. 0 not checked. [2024-11-09 18:01:12,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:01:12,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796303702] [2024-11-09 18:01:12,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796303702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:01:12,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055137502] [2024-11-09 18:01:12,309 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:01:12,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:01:12,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:01:12,311 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) [2024-11-09 18:01:12,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process