./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/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/uthash-2.0.2/uthash_BER_test8-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:49:46,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:49:46,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:49:46,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:49:46,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:49:46,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:49:46,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:49:46,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:49:46,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:49:46,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:49:46,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:49:46,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:49:46,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:49:46,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:49:46,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:49:46,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:49:46,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:49:46,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:49:46,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:49:46,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:49:46,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:49:46,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:49:46,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:49:46,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:49:46,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:49:46,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:49:46,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:49:46,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:49:46,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:49:46,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:49:46,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:49:46,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:49:46,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:49:46,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:49:46,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:49:46,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:49:46,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:49:46,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:49:46,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:49:46,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:49:46,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:49:46,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 13:49:46,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:49:46,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:49:46,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:49:46,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:49:46,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:49:46,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:49:46,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:49:46,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:49:46,450 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:49:46,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:49:46,451 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:49:46,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:49:46,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:49:46,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:49:46,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:49:46,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:49:46,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:49:46,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:49:46,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:49:46,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:49:46,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:49:46,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:49:46,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:49:46,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:49:46,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:49:46,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:49:46,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:49:46,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:49:46,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 13:49:46,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 13:49:46,454 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:49:46,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:49:46,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:49:46,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:49:46,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2021-12-15 13:49:46,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:49:46,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:49:46,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:49:46,704 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:49:46,704 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:49:46,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-12-15 13:49:46,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3426a3f2/f89c2af6e0f14fcbb652f139d0b111ac/FLAG7f9f424d8 [2021-12-15 13:49:47,191 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:49:47,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-12-15 13:49:47,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3426a3f2/f89c2af6e0f14fcbb652f139d0b111ac/FLAG7f9f424d8 [2021-12-15 13:49:47,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3426a3f2/f89c2af6e0f14fcbb652f139d0b111ac [2021-12-15 13:49:47,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:49:47,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:49:47,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:49:47,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:49:47,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:49:47,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:49:47" (1/1) ... [2021-12-15 13:49:47,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ced1225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:47, skipping insertion in model container [2021-12-15 13:49:47,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:49:47" (1/1) ... [2021-12-15 13:49:47,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:49:47,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:49:47,892 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-12-15 13:49:47,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-12-15 13:49:47,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:47,993 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:49:48,010 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-12-15 13:49:48,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-12-15 13:49:48,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:48,105 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:49:48,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48 WrapperNode [2021-12-15 13:49:48,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:49:48,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:49:48,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:49:48,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:49:48,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,186 INFO L137 Inliner]: procedures = 177, calls = 297, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 996 [2021-12-15 13:49:48,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:49:48,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:49:48,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:49:48,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:49:48,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:49:48,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:49:48,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:49:48,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:49:48,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (1/1) ... [2021-12-15 13:49:48,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:49:48,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:49:48,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 13:49:48,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 13:49:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 13:49:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 13:49:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 13:49:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 13:49:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:49:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:49:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-12-15 13:49:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 13:49:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:49:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:49:48,529 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:49:48,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:49:49,304 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:49:49,312 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:49:49,323 INFO L301 CfgBuilder]: Removed 62 assume(true) statements. [2021-12-15 13:49:49,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:49:49 BoogieIcfgContainer [2021-12-15 13:49:49,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:49:49,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:49:49,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:49:49,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:49:49,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:49:47" (1/3) ... [2021-12-15 13:49:49,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6e8686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:49:49, skipping insertion in model container [2021-12-15 13:49:49,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:48" (2/3) ... [2021-12-15 13:49:49,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6e8686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:49:49, skipping insertion in model container [2021-12-15 13:49:49,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:49:49" (3/3) ... [2021-12-15 13:49:49,341 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-1.i [2021-12-15 13:49:49,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:49:49,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:49:49,388 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:49:49,400 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 13:49:49,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:49:49,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 200 states have (on average 1.695) internal successors, (339), 217 states have internal predecessors, (339), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 13:49:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 13:49:49,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:49,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:49:49,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:49,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:49,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-12-15 13:49:49,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:49,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682117670] [2021-12-15 13:49:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:49,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:49,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:49:49,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682117670] [2021-12-15 13:49:49,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682117670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:49,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:49,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:49:49,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258383184] [2021-12-15 13:49:49,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:49,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:49:49,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:49:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:49:49,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:49:49,655 INFO L87 Difference]: Start difference. First operand has 226 states, 200 states have (on average 1.695) internal successors, (339), 217 states have internal predecessors, (339), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:49:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:49:49,715 INFO L93 Difference]: Finished difference Result 450 states and 773 transitions. [2021-12-15 13:49:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:49:49,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-15 13:49:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:49:49,732 INFO L225 Difference]: With dead ends: 450 [2021-12-15 13:49:49,732 INFO L226 Difference]: Without dead ends: 222 [2021-12-15 13:49:49,738 INFO L932 BasicCegarLoop]: 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 [2021-12-15 13:49:49,742 INFO L933 BasicCegarLoop]: 311 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, 311 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 [2021-12-15 13:49:49,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:49:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-15 13:49:49,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-15 13:49:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 13:49:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-12-15 13:49:49,813 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-12-15 13:49:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:49:49,813 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-12-15 13:49:49,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:49:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-12-15 13:49:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:49:49,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:49,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:49:49,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 13:49:49,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:49,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:49,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-12-15 13:49:49,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:49,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485718558] [2021-12-15 13:49:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:49,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:49,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:49:49,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485718558] [2021-12-15 13:49:49,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485718558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:49,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:49,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:49:49,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62006413] [2021-12-15 13:49:49,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:49,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:49:49,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:49:49,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:49:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:49:49,929 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-12-15 13:49:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:49:50,262 INFO L93 Difference]: Finished difference Result 463 states and 642 transitions. [2021-12-15 13:49:50,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:49:50,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-12-15 13:49:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:49:50,266 INFO L225 Difference]: With dead ends: 463 [2021-12-15 13:49:50,266 INFO L226 Difference]: Without dead ends: 338 [2021-12-15 13:49:50,267 INFO L932 BasicCegarLoop]: 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 [2021-12-15 13:49:50,268 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 143 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 13:49:50,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 778 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 13:49:50,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-12-15 13:49:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 224. [2021-12-15 13:49:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 199 states have (on average 1.3517587939698492) internal successors, (269), 215 states have internal predecessors, (269), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 13:49:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2021-12-15 13:49:50,281 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 44 [2021-12-15 13:49:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:49:50,281 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2021-12-15 13:49:50,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-12-15 13:49:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2021-12-15 13:49:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-15 13:49:50,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:50,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:49:50,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 13:49:50,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash 385113170, now seen corresponding path program 1 times [2021-12-15 13:49:50,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:50,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282582874] [2021-12-15 13:49:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:50,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:50,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 13:49:50,349 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:49:50,352 INFO L158 Benchmark]: Toolchain (without parser) took 2820.35ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 72.9MB in the beginning and 83.1MB in the end (delta: -10.2MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2021-12-15 13:49:50,353 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory was 54.0MB in the beginning and 54.0MB in the end (delta: 25.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:49:50,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.94ms. Allocated memory is still 107.0MB. Free memory was 72.7MB in the beginning and 60.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 13:49:50,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.27ms. Allocated memory is still 107.0MB. Free memory was 60.7MB in the beginning and 54.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 13:49:50,354 INFO L158 Benchmark]: Boogie Preprocessor took 78.17ms. Allocated memory is still 107.0MB. Free memory was 54.4MB in the beginning and 47.0MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 13:49:50,354 INFO L158 Benchmark]: RCFGBuilder took 1054.46ms. Allocated memory is still 107.0MB. Free memory was 47.0MB in the beginning and 68.5MB in the end (delta: -21.5MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2021-12-15 13:49:50,355 INFO L158 Benchmark]: TraceAbstraction took 1025.64ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 68.5MB in the beginning and 83.1MB in the end (delta: -14.7MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-12-15 13:49:50,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory was 54.0MB in the beginning and 54.0MB in the end (delta: 25.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.94ms. Allocated memory is still 107.0MB. Free memory was 72.7MB in the beginning and 60.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.27ms. Allocated memory is still 107.0MB. Free memory was 60.7MB in the beginning and 54.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.17ms. Allocated memory is still 107.0MB. Free memory was 54.4MB in the beginning and 47.0MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1054.46ms. Allocated memory is still 107.0MB. Free memory was 47.0MB in the beginning and 68.5MB in the end (delta: -21.5MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1025.64ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 68.5MB in the beginning and 83.1MB in the end (delta: -14.7MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:49:50,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/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/uthash-2.0.2/uthash_BER_test8-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:49:52,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:49:52,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:49:52,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:49:52,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:49:52,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:49:52,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:49:52,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:49:52,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:49:52,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:49:52,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:49:52,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:49:52,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:49:52,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:49:52,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:49:52,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:49:52,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:49:52,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:49:52,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:49:52,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:49:52,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:49:52,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:49:52,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:49:52,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:49:52,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:49:52,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:49:52,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:49:52,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:49:52,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:49:52,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:49:52,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:49:52,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:49:52,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:49:52,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:49:52,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:49:52,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:49:52,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:49:52,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:49:52,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:49:52,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:49:52,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:49:52,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 13:49:52,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:49:52,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:49:52,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:49:52,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:49:52,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:49:52,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:49:52,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:49:52,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:49:52,238 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:49:52,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:49:52,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:49:52,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:49:52,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:49:52,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:49:52,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:49:52,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:49:52,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:49:52,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 13:49:52,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 13:49:52,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:49:52,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:49:52,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:49:52,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:49:52,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:49:52,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:49:52,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:49:52,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:49:52,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:49:52,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:49:52,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:49:52,248 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 13:49:52,248 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 13:49:52,248 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:49:52,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:49:52,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:49:52,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:49:52,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 13:49:52,249 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2021-12-15 13:49:52,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:49:52,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:49:52,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:49:52,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:49:52,511 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:49:52,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-12-15 13:49:52,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce03af97/220545d7269e4c50afb4b8b7ca422c57/FLAG32e9f04f3 [2021-12-15 13:49:53,000 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:49:53,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-12-15 13:49:53,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce03af97/220545d7269e4c50afb4b8b7ca422c57/FLAG32e9f04f3 [2021-12-15 13:49:53,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce03af97/220545d7269e4c50afb4b8b7ca422c57 [2021-12-15 13:49:53,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:49:53,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:49:53,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:49:53,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:49:53,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:49:53,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9748eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53, skipping insertion in model container [2021-12-15 13:49:53,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:49:53,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:49:53,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-12-15 13:49:53,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-12-15 13:49:53,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:53,544 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 13:49:53,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:49:53,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-12-15 13:49:53,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-12-15 13:49:53,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:53,648 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:49:53,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-12-15 13:49:53,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-12-15 13:49:53,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:53,736 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:49:53,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53 WrapperNode [2021-12-15 13:49:53,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:49:53,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:49:53,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:49:53,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:49:53,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,841 INFO L137 Inliner]: procedures = 180, calls = 297, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 996 [2021-12-15 13:49:53,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:49:53,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:49:53,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:49:53,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:49:53,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:49:53,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:49:53,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:49:53,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:49:53,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (1/1) ... [2021-12-15 13:49:53,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:49:53,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:49:53,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 13:49:53,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 13:49:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 13:49:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 13:49:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 13:49:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 13:49:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:49:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:49:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-12-15 13:49:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-12-15 13:49:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:49:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:49:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:49:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:49:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:49:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:49:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:49:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 13:49:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 13:49:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:49:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:49:54,153 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:49:54,154 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:49:58,979 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:49:58,985 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:49:58,985 INFO L301 CfgBuilder]: Removed 62 assume(true) statements. [2021-12-15 13:49:58,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:49:58 BoogieIcfgContainer [2021-12-15 13:49:58,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:49:58,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:49:58,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:49:59,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:49:59,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:49:53" (1/3) ... [2021-12-15 13:49:59,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f67324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:49:59, skipping insertion in model container [2021-12-15 13:49:59,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:53" (2/3) ... [2021-12-15 13:49:59,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f67324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:49:59, skipping insertion in model container [2021-12-15 13:49:59,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:49:58" (3/3) ... [2021-12-15 13:49:59,003 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-1.i [2021-12-15 13:49:59,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:49:59,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:49:59,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:49:59,055 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 13:49:59,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:49:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 200 states have (on average 1.695) internal successors, (339), 217 states have internal predecessors, (339), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 13:49:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 13:49:59,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:59,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:49:59,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:59,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:59,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-12-15 13:49:59,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:49:59,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751836028] [2021-12-15 13:49:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:59,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:49:59,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:49:59,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:49:59,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 13:49:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:59,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 13:49:59,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:49:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:59,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:49:59,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:49:59,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751836028] [2021-12-15 13:49:59,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751836028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:59,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:59,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:49:59,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030230780] [2021-12-15 13:49:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:59,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:49:59,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:49:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:49:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:49:59,343 INFO L87 Difference]: Start difference. First operand has 226 states, 200 states have (on average 1.695) internal successors, (339), 217 states have internal predecessors, (339), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:49:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:49:59,393 INFO L93 Difference]: Finished difference Result 450 states and 773 transitions. [2021-12-15 13:49:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:49:59,394 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-15 13:49:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:49:59,417 INFO L225 Difference]: With dead ends: 450 [2021-12-15 13:49:59,417 INFO L226 Difference]: Without dead ends: 222 [2021-12-15 13:49:59,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:49:59,428 INFO L933 BasicCegarLoop]: 311 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, 311 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 [2021-12-15 13:49:59,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:49:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-15 13:49:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-15 13:49:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 13:49:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-12-15 13:49:59,491 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-12-15 13:49:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:49:59,491 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-12-15 13:49:59,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:49:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-12-15 13:49:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:49:59,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:59,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:49:59,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 13:49:59,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:49:59,702 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:59,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-12-15 13:49:59,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:49:59,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700789709] [2021-12-15 13:49:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:59,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:49:59,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:49:59,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:49:59,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 13:49:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:59,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:49:59,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:49:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:59,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:49:59,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:49:59,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700789709] [2021-12-15 13:49:59,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700789709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:59,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:59,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:49:59,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548201668] [2021-12-15 13:49:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:59,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:49:59,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:49:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:49:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:49:59,986 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-12-15 13:50:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:50:00,124 INFO L93 Difference]: Finished difference Result 355 states and 499 transitions. [2021-12-15 13:50:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:50:00,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-12-15 13:50:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:50:00,126 INFO L225 Difference]: With dead ends: 355 [2021-12-15 13:50:00,126 INFO L226 Difference]: Without dead ends: 231 [2021-12-15 13:50:00,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:50:00,128 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 97 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:50:00,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 754 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:50:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-15 13:50:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2021-12-15 13:50:00,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 200 states have (on average 1.31) internal successors, (262), 216 states have internal predecessors, (262), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 13:50:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 302 transitions. [2021-12-15 13:50:00,144 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 302 transitions. Word has length 44 [2021-12-15 13:50:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:50:00,144 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 302 transitions. [2021-12-15 13:50:00,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-12-15 13:50:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 302 transitions. [2021-12-15 13:50:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:50:00,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:50:00,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:50:00,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 13:50:00,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:00,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:50:00,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:50:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1417019415, now seen corresponding path program 1 times [2021-12-15 13:50:00,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:50:00,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999094912] [2021-12-15 13:50:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:50:00,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:50:00,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:50:00,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:50:00,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 13:50:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:50:00,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 13:50:00,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:50:00,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 13:50:00,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 13:50:00,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 13:50:00,611 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-12-15 13:50:00,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-12-15 13:50:00,671 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-15 13:50:00,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-12-15 13:50:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:50:00,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:50:00,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:50:00,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999094912] [2021-12-15 13:50:00,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999094912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:50:00,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:50:00,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:50:00,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169721723] [2021-12-15 13:50:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:50:00,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:50:00,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:50:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:50:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:50:00,744 INFO L87 Difference]: Start difference. First operand 225 states and 302 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-12-15 13:50:04,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 13:50:06,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:50:06,495 INFO L93 Difference]: Finished difference Result 472 states and 627 transitions. [2021-12-15 13:50:06,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:50:06,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-12-15 13:50:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:50:06,498 INFO L225 Difference]: With dead ends: 472 [2021-12-15 13:50:06,498 INFO L226 Difference]: Without dead ends: 344 [2021-12-15 13:50:06,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:50:06,499 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 132 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-15 13:50:06,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 761 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-12-15 13:50:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-15 13:50:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 227. [2021-12-15 13:50:06,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 202 states have (on average 1.306930693069307) internal successors, (264), 218 states have internal predecessors, (264), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-15 13:50:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 304 transitions. [2021-12-15 13:50:06,517 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 304 transitions. Word has length 44 [2021-12-15 13:50:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:50:06,517 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 304 transitions. [2021-12-15 13:50:06,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-12-15 13:50:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 304 transitions. [2021-12-15 13:50:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-15 13:50:06,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:50:06,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:50:06,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 13:50:06,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:06,720 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:50:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:50:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash 385113170, now seen corresponding path program 1 times [2021-12-15 13:50:06,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:50:06,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134706228] [2021-12-15 13:50:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:50:06,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:50:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:50:06,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:50:06,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 13:50:06,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-15 13:50:07,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:07,045 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:50:07,052 INFO L158 Benchmark]: Toolchain (without parser) took 14017.65ms. Allocated memory was 56.6MB in the beginning and 94.4MB in the end (delta: 37.7MB). Free memory was 33.3MB in the beginning and 36.4MB in the end (delta: -3.1MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2021-12-15 13:50:07,052 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 39.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:50:07,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.00ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 33.1MB in the beginning and 51.5MB in the end (delta: -18.4MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-12-15 13:50:07,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.78ms. Allocated memory is still 73.4MB. Free memory was 51.5MB in the beginning and 44.9MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 13:50:07,054 INFO L158 Benchmark]: Boogie Preprocessor took 65.52ms. Allocated memory is still 73.4MB. Free memory was 44.9MB in the beginning and 37.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 13:50:07,054 INFO L158 Benchmark]: RCFGBuilder took 5078.48ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 37.1MB in the beginning and 60.0MB in the end (delta: -22.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-12-15 13:50:07,054 INFO L158 Benchmark]: TraceAbstraction took 8051.91ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 36.4MB in the end (delta: 22.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-12-15 13:50:07,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 39.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.00ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 33.1MB in the beginning and 51.5MB in the end (delta: -18.4MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.78ms. Allocated memory is still 73.4MB. Free memory was 51.5MB in the beginning and 44.9MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.52ms. Allocated memory is still 73.4MB. Free memory was 44.9MB in the beginning and 37.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 5078.48ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 37.1MB in the beginning and 60.0MB in the end (delta: -22.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8051.91ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 36.4MB in the end (delta: 22.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:50:07,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable