./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7770ba1119c1ebb05279b2f71af570d7d6521032dfc344bf6d89fc60d99335e2 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:48:12,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:48:12,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:48:12,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:48:12,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:48:12,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:48:12,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:48:12,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:48:12,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:48:12,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:48:12,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:48:12,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:48:12,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:48:12,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:48:12,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:48:12,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:48:12,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:48:12,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:48:12,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:48:12,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:48:12,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:48:12,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:48:12,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:48:12,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:48:12,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:48:12,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:48:12,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:48:12,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:48:12,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:48:12,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:48:12,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:48:12,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:48:12,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:48:12,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:48:12,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:48:12,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:48:12,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:48:12,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:48:12,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:48:12,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:48:12,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:48:12,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 16:48:12,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:48:12,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:48:12,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:48:12,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:48:12,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:48:12,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:48:12,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:48:12,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:48:12,290 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:48:12,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:48:12,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:48:12,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:48:12,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:48:12,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:48:12,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:48:12,292 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:48:12,292 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:48:12,293 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:48:12,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:48:12,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:48:12,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:48:12,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:48:12,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:48:12,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:48:12,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:48:12,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:48:12,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:48:12,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:48:12,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:48:12,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:48:12,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:48:12,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7770ba1119c1ebb05279b2f71af570d7d6521032dfc344bf6d89fc60d99335e2 [2021-12-15 16:48:12,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:48:12,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:48:12,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:48:12,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:48:12,567 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:48:12,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i [2021-12-15 16:48:12,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a597de1/744347f2cb854296a665aa747ec3e2ae/FLAG144f8f22e [2021-12-15 16:48:13,186 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:48:13,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i [2021-12-15 16:48:13,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a597de1/744347f2cb854296a665aa747ec3e2ae/FLAG144f8f22e [2021-12-15 16:48:13,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98a597de1/744347f2cb854296a665aa747ec3e2ae [2021-12-15 16:48:13,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:48:13,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:48:13,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:48:13,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:48:13,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:48:13,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:48:13" (1/1) ... [2021-12-15 16:48:13,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf52844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:13, skipping insertion in model container [2021-12-15 16:48:13,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:48:13" (1/1) ... [2021-12-15 16:48:13,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:48:13,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:48:13,940 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_SFH_test5-2.i[33021,33034] [2021-12-15 16:48:14,032 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_SFH_test5-2.i[49681,49694] [2021-12-15 16:48:14,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:48:14,049 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-15 16:48:14,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@382e6af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:14, skipping insertion in model container [2021-12-15 16:48:14,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:48:14,050 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 16:48:14,051 INFO L158 Benchmark]: Toolchain (without parser) took 448.32ms. Allocated memory is still 94.4MB. Free memory was 72.4MB in the beginning and 55.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-15 16:48:14,051 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:48:14,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.65ms. Allocated memory is still 94.4MB. Free memory was 72.1MB in the beginning and 55.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-15 16:48:14,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.65ms. Allocated memory is still 94.4MB. Free memory was 72.1MB in the beginning and 55.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7770ba1119c1ebb05279b2f71af570d7d6521032dfc344bf6d89fc60d99335e2 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:48:16,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:48:16,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:48:16,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:48:16,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:48:16,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:48:16,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:48:16,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:48:16,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:48:16,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:48:16,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:48:16,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:48:16,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:48:16,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:48:16,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:48:16,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:48:16,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:48:16,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:48:16,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:48:16,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:48:16,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:48:16,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:48:16,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:48:16,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:48:16,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:48:16,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:48:16,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:48:16,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:48:16,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:48:16,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:48:16,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:48:16,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:48:16,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:48:16,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:48:16,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:48:16,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:48:16,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:48:16,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:48:16,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:48:16,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:48:16,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:48:16,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 16:48:16,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:48:16,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:48:16,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:48:16,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:48:16,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:48:16,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:48:16,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:48:16,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:48:16,529 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:48:16,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:48:16,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:48:16,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:48:16,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:48:16,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:48:16,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:48:16,530 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:48:16,530 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:48:16,530 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:48:16,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:48:16,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:48:16,530 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 16:48:16,531 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 16:48:16,531 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:48:16,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:48:16,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:48:16,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:48:16,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:48:16,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:48:16,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:48:16,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:48:16,532 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 16:48:16,532 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 16:48:16,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:48:16,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 16:48:16,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7770ba1119c1ebb05279b2f71af570d7d6521032dfc344bf6d89fc60d99335e2 [2021-12-15 16:48:16,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:48:16,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:48:17,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:48:17,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:48:17,008 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:48:17,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i [2021-12-15 16:48:17,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a952635b/076922c894f947a4b88c7a22f594086c/FLAGcd89fba9b [2021-12-15 16:48:17,640 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:48:17,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i [2021-12-15 16:48:17,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a952635b/076922c894f947a4b88c7a22f594086c/FLAGcd89fba9b [2021-12-15 16:48:17,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a952635b/076922c894f947a4b88c7a22f594086c [2021-12-15 16:48:17,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:48:17,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:48:17,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:48:17,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:48:17,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:48:17,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:48:17" (1/1) ... [2021-12-15 16:48:17,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1c0966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:17, skipping insertion in model container [2021-12-15 16:48:17,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:48:17" (1/1) ... [2021-12-15 16:48:17,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:48:17,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:48:18,341 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_SFH_test5-2.i[33021,33034] [2021-12-15 16:48:18,460 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_SFH_test5-2.i[49681,49694] [2021-12-15 16:48:18,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:48:18,485 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 16:48:18,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:48:18,526 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_SFH_test5-2.i[33021,33034] [2021-12-15 16:48:18,602 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_SFH_test5-2.i[49681,49694] [2021-12-15 16:48:18,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:48:18,619 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:48:18,645 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_SFH_test5-2.i[33021,33034] [2021-12-15 16:48:18,705 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_SFH_test5-2.i[49681,49694] [2021-12-15 16:48:18,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:48:18,740 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:48:18,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18 WrapperNode [2021-12-15 16:48:18,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:48:18,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:48:18,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:48:18,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:48:18,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,869 INFO L137 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1578 [2021-12-15 16:48:18,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:48:18,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:48:18,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:48:18,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:48:18,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:48:18,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:48:18,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:48:18,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:48:18,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (1/1) ... [2021-12-15 16:48:18,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:48:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:48:19,065 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 16:48:19,078 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 16:48:19,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 16:48:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 16:48:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 16:48:19,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 16:48:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 16:48:19,108 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 16:48:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 16:48:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:48:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 16:48:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 16:48:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 16:48:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 16:48:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 16:48:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 16:48:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 16:48:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:48:19,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:48:19,328 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:48:19,329 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:48:19,331 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 16:48:25,395 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:48:25,423 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:48:25,423 INFO L301 CfgBuilder]: Removed 92 assume(true) statements. [2021-12-15 16:48:25,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:48:25 BoogieIcfgContainer [2021-12-15 16:48:25,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:48:25,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:48:25,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:48:25,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:48:25,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:48:17" (1/3) ... [2021-12-15 16:48:25,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8139de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:48:25, skipping insertion in model container [2021-12-15 16:48:25,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:48:18" (2/3) ... [2021-12-15 16:48:25,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8139de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:48:25, skipping insertion in model container [2021-12-15 16:48:25,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:48:25" (3/3) ... [2021-12-15 16:48:25,436 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-2.i [2021-12-15 16:48:25,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:48:25,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 834 error locations. [2021-12-15 16:48:25,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:48:25,491 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 16:48:25,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 834 error locations. [2021-12-15 16:48:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:48:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:48:25,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:48:25,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:48:25,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-15 16:48:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:48:25,536 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-12-15 16:48:25,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:48:25,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406874229] [2021-12-15 16:48:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:48:25,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:48:25,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:48:25,572 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 16:48:25,580 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 16:48:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:48:25,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 16:48:25,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:48:25,798 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 16:48:25,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:48:25,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:48:25,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406874229] [2021-12-15 16:48:25,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406874229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:48:25,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:48:25,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:48:25,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595011667] [2021-12-15 16:48:25,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:48:25,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 16:48:25,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:48:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 16:48:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:48:25,844 INFO L87 Difference]: Start difference. First operand has 1655 states, 813 states have (on average 2.2484624846248464) internal successors, (1828), 1646 states have internal predecessors, (1828), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 16:48:25,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:48:25,927 INFO L93 Difference]: Finished difference Result 1637 states and 1731 transitions. [2021-12-15 16:48:25,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 16:48:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-12-15 16:48:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:48:25,948 INFO L225 Difference]: With dead ends: 1637 [2021-12-15 16:48:25,948 INFO L226 Difference]: Without dead ends: 1635 [2021-12-15 16:48:25,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 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 16:48:25,952 INFO L933 BasicCegarLoop]: 1731 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, 1731 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 16:48:25,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:48:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-12-15 16:48:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2021-12-15 16:48:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 804 states have (on average 2.123134328358209) internal successors, (1707), 1626 states have internal predecessors, (1707), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:48:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 1729 transitions. [2021-12-15 16:48:26,037 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 1729 transitions. Word has length 5 [2021-12-15 16:48:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:48:26,037 INFO L470 AbstractCegarLoop]: Abstraction has 1635 states and 1729 transitions. [2021-12-15 16:48:26,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 16:48:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 1729 transitions. [2021-12-15 16:48:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:48:26,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:48:26,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:48:26,048 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 16:48:26,245 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 16:48:26,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-15 16:48:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:48:26,248 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-12-15 16:48:26,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:48:26,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222897988] [2021-12-15 16:48:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:48:26,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:48:26,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:48:26,253 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 16:48:26,256 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 16:48:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:48:26,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:48:26,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:48:26,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:48:26,478 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 16:48:26,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:48:26,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:48:26,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222897988] [2021-12-15 16:48:26,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222897988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:48:26,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:48:26,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:48:26,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46556914] [2021-12-15 16:48:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:48:26,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:48:26,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:48:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:48:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:48:26,504 INFO L87 Difference]: Start difference. First operand 1635 states and 1729 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:48:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:48:29,023 INFO L93 Difference]: Finished difference Result 1891 states and 2028 transitions. [2021-12-15 16:48:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:48:29,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-15 16:48:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:48:29,029 INFO L225 Difference]: With dead ends: 1891 [2021-12-15 16:48:29,029 INFO L226 Difference]: Without dead ends: 1891 [2021-12-15 16:48:29,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:48:29,030 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 1369 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-15 16:48:29,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1533 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-15 16:48:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2021-12-15 16:48:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1620. [2021-12-15 16:48:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 880 states have (on average 1.9897727272727272) internal successors, (1751), 1611 states have internal predecessors, (1751), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:48:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1773 transitions. [2021-12-15 16:48:29,082 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1773 transitions. Word has length 5 [2021-12-15 16:48:29,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:48:29,083 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 1773 transitions. [2021-12-15 16:48:29,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:48:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1773 transitions. [2021-12-15 16:48:29,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:48:29,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:48:29,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:48:29,118 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 16:48:29,303 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 16:48:29,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-15 16:48:29,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:48:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-12-15 16:48:29,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:48:29,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130552324] [2021-12-15 16:48:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:48:29,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:48:29,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:48:29,316 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 16:48:29,321 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 16:48:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:48:29,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:48:29,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:48:29,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:48:29,538 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 16:48:29,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:48:29,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:48:29,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130552324] [2021-12-15 16:48:29,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130552324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:48:29,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:48:29,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:48:29,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511242243] [2021-12-15 16:48:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:48:29,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:48:29,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:48:29,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:48:29,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:48:29,546 INFO L87 Difference]: Start difference. First operand 1620 states and 1773 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:48:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:48:32,751 INFO L93 Difference]: Finished difference Result 2140 states and 2343 transitions. [2021-12-15 16:48:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:48:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-15 16:48:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:48:32,757 INFO L225 Difference]: With dead ends: 2140 [2021-12-15 16:48:32,757 INFO L226 Difference]: Without dead ends: 2140 [2021-12-15 16:48:32,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:48:32,758 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 741 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:48:32,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 2268 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-15 16:48:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-12-15 16:48:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1776. [2021-12-15 16:48:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1046 states have (on average 1.9665391969407267) internal successors, (2057), 1767 states have internal predecessors, (2057), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:48:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2079 transitions. [2021-12-15 16:48:32,787 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2079 transitions. Word has length 5 [2021-12-15 16:48:32,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:48:32,787 INFO L470 AbstractCegarLoop]: Abstraction has 1776 states and 2079 transitions. [2021-12-15 16:48:32,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:48:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2079 transitions. [2021-12-15 16:48:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:48:32,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:48:32,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:48:32,797 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 16:48:32,995 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 16:48:32,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-15 16:48:32,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:48:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-12-15 16:48:32,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:48:32,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014274868] [2021-12-15 16:48:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:48:32,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:48:32,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:48:33,000 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 16:48:33,020 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 16:48:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:48:33,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:48:33,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:48:33,247 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 16:48:33,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:48:33,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:48:33,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014274868] [2021-12-15 16:48:33,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014274868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:48:33,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:48:33,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:48:33,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276052078] [2021-12-15 16:48:33,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:48:33,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:48:33,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:48:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:48:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:48:33,249 INFO L87 Difference]: Start difference. First operand 1776 states and 2079 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 16:48:33,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:48:33,357 INFO L93 Difference]: Finished difference Result 3336 states and 3931 transitions. [2021-12-15 16:48:33,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:48:33,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-15 16:48:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:48:33,369 INFO L225 Difference]: With dead ends: 3336 [2021-12-15 16:48:33,369 INFO L226 Difference]: Without dead ends: 3336 [2021-12-15 16:48:33,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:48:33,370 INFO L933 BasicCegarLoop]: 1854 mSDtfsCounter, 1377 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:48:33,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 3471 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:48:33,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-12-15 16:48:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 1778. [2021-12-15 16:48:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1048 states have (on average 1.9646946564885497) internal successors, (2059), 1769 states have internal predecessors, (2059), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:48:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2081 transitions. [2021-12-15 16:48:33,450 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2081 transitions. Word has length 6 [2021-12-15 16:48:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:48:33,451 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 2081 transitions. [2021-12-15 16:48:33,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 16:48:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2081 transitions. [2021-12-15 16:48:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 16:48:33,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:48:33,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:48:33,477 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 16:48:33,662 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 16:48:33,662 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-15 16:48:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:48:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-12-15 16:48:33,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:48:33,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203945795] [2021-12-15 16:48:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:48:33,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:48:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:48:33,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:48:33,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 16:48:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:48:33,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:48:33,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:48:33,858 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 16:48:33,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:48:33,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:48:33,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203945795] [2021-12-15 16:48:33,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203945795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:48:33,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:48:33,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:48:33,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850434955] [2021-12-15 16:48:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:48:33,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:48:33,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:48:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:48:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:48:33,860 INFO L87 Difference]: Start difference. First operand 1778 states and 2081 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:48:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:48:33,890 INFO L93 Difference]: Finished difference Result 1742 states and 2044 transitions. [2021-12-15 16:48:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:48:33,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 16:48:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:48:33,907 INFO L225 Difference]: With dead ends: 1742 [2021-12-15 16:48:33,907 INFO L226 Difference]: Without dead ends: 1742 [2021-12-15 16:48:33,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:48:33,908 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1550 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:48:33,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 1608 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:48:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-12-15 16:48:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1736. [2021-12-15 16:48:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1030 states have (on average 1.9572815533980583) internal successors, (2016), 1727 states have internal predecessors, (2016), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:48:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2038 transitions. [2021-12-15 16:48:33,938 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2038 transitions. Word has length 11 [2021-12-15 16:48:33,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:48:33,938 INFO L470 AbstractCegarLoop]: Abstraction has 1736 states and 2038 transitions. [2021-12-15 16:48:33,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:48:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2038 transitions. [2021-12-15 16:48:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 16:48:33,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:48:33,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:48:33,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-15 16:48:34,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:48:34,148 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-15 16:48:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:48:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-12-15 16:48:34,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:48:34,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514497789] [2021-12-15 16:48:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:48:34,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:48:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:48:34,167 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:48:34,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-15 16:48:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:48:34,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:48:34,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:48:34,373 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 16:48:34,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:48:34,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:48:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514497789] [2021-12-15 16:48:34,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514497789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:48:34,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:48:34,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:48:34,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554285802] [2021-12-15 16:48:34,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:48:34,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:48:34,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:48:34,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:48:34,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:48:34,379 INFO L87 Difference]: Start difference. First operand 1736 states and 2038 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 16:48:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:48:34,466 INFO L93 Difference]: Finished difference Result 1721 states and 2016 transitions. [2021-12-15 16:48:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:48:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-12-15 16:48:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:48:34,471 INFO L225 Difference]: With dead ends: 1721 [2021-12-15 16:48:34,471 INFO L226 Difference]: Without dead ends: 1721 [2021-12-15 16:48:34,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 16:48:34,472 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 1521 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:48:34,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 3091 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:48:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2021-12-15 16:48:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1714. [2021-12-15 16:48:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1022 states have (on average 1.9442270058708415) internal successors, (1987), 1705 states have internal predecessors, (1987), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:48:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2009 transitions. [2021-12-15 16:48:34,496 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2009 transitions. Word has length 13 [2021-12-15 16:48:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:48:34,496 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 2009 transitions. [2021-12-15 16:48:34,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 16:48:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2009 transitions. [2021-12-15 16:48:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 16:48:34,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:48:34,497 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] [2021-12-15 16:48:34,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-15 16:48:34,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:48:34,705 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 830 more)] === [2021-12-15 16:48:34,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:48:34,705 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-12-15 16:48:34,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:48:34,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035473639] [2021-12-15 16:48:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:48:34,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:48:34,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:48:34,724 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:48:34,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-15 16:48:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:48:34,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:48:34,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:48:34,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:48:34,953 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 16:48:34,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:48:34,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:48:34,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035473639] [2021-12-15 16:48:34,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035473639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:48:34,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:48:34,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:48:34,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513346519] [2021-12-15 16:48:34,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:48:34,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:48:34,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:48:34,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:48:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:48:34,955 INFO L87 Difference]: Start difference. First operand 1714 states and 2009 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 16:48:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:48:35,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 16:48:35,172 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 164 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:48:35,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 73 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:48:35,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-15 16:48:35,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:48:35,373 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.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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 16:48:35,377 INFO L158 Benchmark]: Toolchain (without parser) took 17477.11ms. Allocated memory was 65.0MB in the beginning and 157.3MB in the end (delta: 92.3MB). Free memory was 46.9MB in the beginning and 72.4MB in the end (delta: -25.6MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2021-12-15 16:48:35,377 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.5MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:48:35,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 839.48ms. Allocated memory is still 65.0MB. Free memory was 46.7MB in the beginning and 28.8MB in the end (delta: 17.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-12-15 16:48:35,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 127.68ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 28.8MB in the beginning and 50.2MB in the end (delta: -21.4MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-12-15 16:48:35,378 INFO L158 Benchmark]: Boogie Preprocessor took 96.82ms. Allocated memory is still 79.7MB. Free memory was 49.9MB in the beginning and 39.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 16:48:35,378 INFO L158 Benchmark]: RCFGBuilder took 6460.37ms. Allocated memory was 79.7MB in the beginning and 125.8MB in the end (delta: 46.1MB). Free memory was 39.0MB in the beginning and 51.3MB in the end (delta: -12.3MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2021-12-15 16:48:35,379 INFO L158 Benchmark]: TraceAbstraction took 9947.15ms. Allocated memory was 125.8MB in the beginning and 157.3MB in the end (delta: 31.5MB). Free memory was 51.3MB in the beginning and 72.4MB in the end (delta: -21.2MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-12-15 16:48:35,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.5MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 839.48ms. Allocated memory is still 65.0MB. Free memory was 46.7MB in the beginning and 28.8MB in the end (delta: 17.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 127.68ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 28.8MB in the beginning and 50.2MB in the end (delta: -21.4MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.82ms. Allocated memory is still 79.7MB. Free memory was 49.9MB in the beginning and 39.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 6460.37ms. Allocated memory was 79.7MB in the beginning and 125.8MB in the end (delta: 46.1MB). Free memory was 39.0MB in the beginning and 51.3MB in the end (delta: -12.3MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9947.15ms. Allocated memory was 125.8MB in the beginning and 157.3MB in the end (delta: 31.5MB). Free memory was 51.3MB in the beginning and 72.4MB in the end (delta: -21.2MB). Peak memory consumption was 9.2MB. 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 16:48:35,419 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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable