./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.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_FNV_test7-2.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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:45:40,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:45:40,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:45:40,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:45:40,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:45:40,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:45:40,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:45:40,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:45:40,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:45:40,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:45:40,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:45:40,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:45:40,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:45:40,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:45:40,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:45:40,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:45:40,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:45:40,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:45:40,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:45:40,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:45:40,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:45:40,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:45:40,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:45:40,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:45:40,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:45:40,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:45:40,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:45:40,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:45:40,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:45:40,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:45:40,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:45:40,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:45:40,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:45:40,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:45:40,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:45:40,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:45:40,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:45:40,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:45:40,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:45:40,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:45:40,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:45:40,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 16:45:40,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:45:40,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:45:40,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:45:40,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:45:40,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:45:40,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:45:40,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:45:40,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:45:40,488 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:45:40,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:45:40,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:45:40,489 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:45:40,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:45:40,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:45:40,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:45:40,490 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:45:40,491 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:45:40,491 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:45:40,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:45:40,491 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:45:40,492 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:45:40,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:45:40,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:45:40,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:45:40,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:45:40,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:40,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:45:40,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:45:40,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:45:40,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:45:40,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:45:40,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2021-12-15 16:45:40,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:45:40,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:45:40,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:45:40,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:45:40,782 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:45:40,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-12-15 16:45:40,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0a6f999/b1de2f28a8674662ab6a8f78aa33d1c5/FLAGa30f2d23c [2021-12-15 16:45:41,329 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:45:41,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-12-15 16:45:41,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0a6f999/b1de2f28a8674662ab6a8f78aa33d1c5/FLAGa30f2d23c [2021-12-15 16:45:41,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0a6f999/b1de2f28a8674662ab6a8f78aa33d1c5 [2021-12-15 16:45:41,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:45:41,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:45:41,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:41,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:45:41,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:45:41,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:41" (1/1) ... [2021-12-15 16:45:41,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721916ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:41, skipping insertion in model container [2021-12-15 16:45:41,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:41" (1/1) ... [2021-12-15 16:45:41,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:45:41,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:42,253 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_FNV_test7-2.i[33021,33034] [2021-12-15 16:45:42,377 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_FNV_test7-2.i[44124,44137] [2021-12-15 16:45:42,378 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_FNV_test7-2.i[44245,44258] [2021-12-15 16:45:42,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:42,399 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 16:45:42,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56f2797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:42, skipping insertion in model container [2021-12-15 16:45:42,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:42,400 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 16:45:42,402 INFO L158 Benchmark]: Toolchain (without parser) took 552.41ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 56.3MB in the beginning and 83.3MB in the end (delta: -27.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:45:42,403 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 47.5MB in the beginning and 47.5MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:42,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 548.90ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 56.0MB in the beginning and 83.3MB in the end (delta: -27.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:45:42,405 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 90.2MB. Free memory was 47.5MB in the beginning and 47.5MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 548.90ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 56.0MB in the beginning and 83.3MB in the end (delta: -27.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_FNV_test7-2.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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:45:44,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:45:44,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:45:44,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:45:44,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:45:44,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:45:44,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:45:44,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:45:44,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:45:44,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:45:44,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:45:44,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:45:44,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:45:44,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:45:44,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:45:44,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:45:44,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:45:44,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:45:44,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:45:44,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:45:44,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:45:44,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:45:44,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:45:44,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:45:44,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:45:44,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:45:44,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:45:44,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:45:44,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:45:44,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:45:44,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:45:44,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:45:44,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:45:44,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:45:44,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:45:44,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:45:44,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:45:44,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:45:44,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:45:44,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:45:44,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:45:44,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 16:45:44,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:45:44,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:45:44,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:45:44,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:45:44,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:45:44,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:45:44,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:45:44,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:45:44,372 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:45:44,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:45:44,374 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:45:44,374 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:45:44,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:45:44,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:45:44,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:45:44,375 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:45:44,375 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:45:44,375 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:45:44,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:45:44,375 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:45:44,376 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 16:45:44,376 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 16:45:44,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:45:44,376 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:45:44,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:45:44,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:45:44,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:45:44,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:44,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:45:44,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:45:44,378 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 16:45:44,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 16:45:44,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:45:44,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 16:45:44,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2021-12-15 16:45:44,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:45:44,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:45:44,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:45:44,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:45:44,712 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:45:44,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-12-15 16:45:44,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e979327/dee214c43eae4962bfe6e5da0796ed28/FLAG8e53ebbd6 [2021-12-15 16:45:45,335 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:45:45,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-12-15 16:45:45,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e979327/dee214c43eae4962bfe6e5da0796ed28/FLAG8e53ebbd6 [2021-12-15 16:45:45,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e979327/dee214c43eae4962bfe6e5da0796ed28 [2021-12-15 16:45:45,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:45:45,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:45:45,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:45,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:45:45,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:45:45,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:45" (1/1) ... [2021-12-15 16:45:45,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c19780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:45, skipping insertion in model container [2021-12-15 16:45:45,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:45" (1/1) ... [2021-12-15 16:45:45,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:45:45,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:46,060 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_FNV_test7-2.i[33021,33034] [2021-12-15 16:45:46,175 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_FNV_test7-2.i[44124,44137] [2021-12-15 16:45:46,176 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_FNV_test7-2.i[44245,44258] [2021-12-15 16:45:46,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:46,201 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 16:45:46,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:46,235 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_FNV_test7-2.i[33021,33034] [2021-12-15 16:45:46,281 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_FNV_test7-2.i[44124,44137] [2021-12-15 16:45:46,282 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_FNV_test7-2.i[44245,44258] [2021-12-15 16:45:46,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:46,295 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:45:46,326 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_FNV_test7-2.i[33021,33034] [2021-12-15 16:45:46,365 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_FNV_test7-2.i[44124,44137] [2021-12-15 16:45:46,366 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_FNV_test7-2.i[44245,44258] [2021-12-15 16:45:46,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:46,421 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:45:46,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46 WrapperNode [2021-12-15 16:45:46,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:46,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:45:46,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:45:46,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:45:46,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,537 INFO L137 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2021-12-15 16:45:46,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:45:46,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:45:46,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:45:46,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:45:46,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:45:46,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:45:46,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:45:46,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:45:46,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (1/1) ... [2021-12-15 16:45:46,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:46,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:45:46,697 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 16:45:46,722 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 16:45:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 16:45:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 16:45:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 16:45:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 16:45:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 16:45:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:45:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 16:45:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 16:45:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 16:45:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 16:45:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 16:45:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 16:45:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 16:45:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:45:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:45:47,018 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:45:47,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:45:47,022 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 16:45:50,864 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:45:50,890 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:45:50,895 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-12-15 16:45:50,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:45:50 BoogieIcfgContainer [2021-12-15 16:45:50,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:45:50,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:45:50,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:45:50,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:45:50,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:45:45" (1/3) ... [2021-12-15 16:45:50,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2c3e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:45:50, skipping insertion in model container [2021-12-15 16:45:50,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:46" (2/3) ... [2021-12-15 16:45:50,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2c3e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:45:50, skipping insertion in model container [2021-12-15 16:45:50,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:45:50" (3/3) ... [2021-12-15 16:45:50,911 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-2.i [2021-12-15 16:45:50,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:45:50,915 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-12-15 16:45:50,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:45:50,952 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 16:45:50,952 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-12-15 16:45:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 16:45:50,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:50,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 16:45:50,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:50,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-12-15 16:45:51,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:51,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771810918] [2021-12-15 16:45:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:51,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:51,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:51,011 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 16:45:51,024 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 16:45:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:51,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:51,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:51,317 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 16:45:51,328 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 16:45:51,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:51,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:51,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771810918] [2021-12-15 16:45:51,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771810918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:51,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:51,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:51,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969174889] [2021-12-15 16:45:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:51,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:51,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:51,366 INFO L87 Difference]: Start difference. First operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 16:45:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:53,402 INFO L93 Difference]: Finished difference Result 1417 states and 1492 transitions. [2021-12-15 16:45:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:53,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-15 16:45:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:53,425 INFO L225 Difference]: With dead ends: 1417 [2021-12-15 16:45:53,426 INFO L226 Difference]: Without dead ends: 1415 [2021-12-15 16:45:53,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:45:53,432 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1160 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:53,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 893 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-15 16:45:53,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-12-15 16:45:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1230. [2021-12-15 16:45:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 610 states have (on average 2.1163934426229507) internal successors, (1291), 1225 states have internal predecessors, (1291), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1297 transitions. [2021-12-15 16:45:53,526 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1297 transitions. Word has length 3 [2021-12-15 16:45:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:53,527 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1297 transitions. [2021-12-15 16:45:53,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 16:45:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1297 transitions. [2021-12-15 16:45:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 16:45:53,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:53,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 16:45:53,541 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 16:45:53,737 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 16:45:53,738 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-12-15 16:45:53,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:53,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105812274] [2021-12-15 16:45:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:53,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:53,741 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 16:45:53,745 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 16:45:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:53,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:53,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:53,893 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 16:45:53,905 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 16:45:53,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:53,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:53,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105812274] [2021-12-15 16:45:53,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105812274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:53,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:53,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:53,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925282803] [2021-12-15 16:45:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:53,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:53,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:53,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:53,909 INFO L87 Difference]: Start difference. First operand 1230 states and 1297 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 16:45:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:56,722 INFO L93 Difference]: Finished difference Result 1819 states and 1926 transitions. [2021-12-15 16:45:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:56,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-15 16:45:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:56,730 INFO L225 Difference]: With dead ends: 1819 [2021-12-15 16:45:56,730 INFO L226 Difference]: Without dead ends: 1819 [2021-12-15 16:45:56,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:45:56,731 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 629 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:56,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 1690 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-15 16:45:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-12-15 16:45:56,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1431. [2021-12-15 16:45:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 812 states have (on average 2.0985221674876846) internal successors, (1704), 1426 states have internal predecessors, (1704), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:45:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1710 transitions. [2021-12-15 16:45:56,778 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1710 transitions. Word has length 3 [2021-12-15 16:45:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:56,779 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 1710 transitions. [2021-12-15 16:45:56,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 16:45:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1710 transitions. [2021-12-15 16:45:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 16:45:56,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:56,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:56,795 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 16:45:56,989 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 16:45:56,990 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:45:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2021-12-15 16:45:56,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:56,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730493070] [2021-12-15 16:45:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:56,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:56,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:56,993 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 16:45:56,994 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 16:45:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:57,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 16:45:57,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:57,148 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 16:45:57,154 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 16:45:57,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 16:45:57,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-15 16:45:57,214 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 16:45:57,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 16:45:57,239 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 16:45:57,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:57,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:57,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730493070] [2021-12-15 16:45:57,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730493070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:57,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:57,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:57,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28854744] [2021-12-15 16:45:57,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:57,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:57,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:57,242 INFO L87 Difference]: Start difference. First operand 1431 states and 1710 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 16:46:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:00,136 INFO L93 Difference]: Finished difference Result 1609 states and 1899 transitions. [2021-12-15 16:46:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:00,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-12-15 16:46:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:00,144 INFO L225 Difference]: With dead ends: 1609 [2021-12-15 16:46:00,157 INFO L226 Difference]: Without dead ends: 1609 [2021-12-15 16:46:00,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:00,159 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1450 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:00,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 507 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-15 16:46:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-12-15 16:46:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1219. [2021-12-15 16:46:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 610 states have (on average 2.09672131147541) internal successors, (1279), 1214 states have internal predecessors, (1279), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1285 transitions. [2021-12-15 16:46:00,186 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1285 transitions. Word has length 7 [2021-12-15 16:46:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:00,187 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 1285 transitions. [2021-12-15 16:46:00,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 16:46:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1285 transitions. [2021-12-15 16:46:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:46:00,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:00,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:00,199 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 16:46:00,398 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 16:46:00,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:00,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-12-15 16:46:00,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:00,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328966372] [2021-12-15 16:46:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:00,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:00,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:00,402 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 16:46:00,403 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 16:46:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:00,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:46:00,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:00,538 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 16:46:00,554 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 16:46:00,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:00,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328966372] [2021-12-15 16:46:00,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328966372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:00,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:00,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:46:00,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284112980] [2021-12-15 16:46:00,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:00,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:00,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:00,557 INFO L87 Difference]: Start difference. First operand 1219 states and 1285 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:46:02,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:02,071 INFO L93 Difference]: Finished difference Result 1548 states and 1643 transitions. [2021-12-15 16:46:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:02,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-12-15 16:46:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:02,083 INFO L225 Difference]: With dead ends: 1548 [2021-12-15 16:46:02,083 INFO L226 Difference]: Without dead ends: 1548 [2021-12-15 16:46:02,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 16:46:02,086 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 973 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:02,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 1476 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-15 16:46:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-12-15 16:46:02,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1172. [2021-12-15 16:46:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 610 states have (on average 2.019672131147541) internal successors, (1232), 1167 states have internal predecessors, (1232), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1238 transitions. [2021-12-15 16:46:02,110 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1238 transitions. Word has length 8 [2021-12-15 16:46:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:02,110 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1238 transitions. [2021-12-15 16:46:02,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:46:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1238 transitions. [2021-12-15 16:46:02,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:46:02,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:02,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:02,127 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 16:46:02,320 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 16:46:02,321 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:02,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-12-15 16:46:02,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:02,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955454103] [2021-12-15 16:46:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:02,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:02,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:02,322 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 16:46:02,323 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 16:46:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:02,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:46:02,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:02,450 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 16:46:02,475 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 16:46:02,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:02,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:02,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955454103] [2021-12-15 16:46:02,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955454103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:02,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:02,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:46:02,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142651482] [2021-12-15 16:46:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:02,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:02,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:02,477 INFO L87 Difference]: Start difference. First operand 1172 states and 1238 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:46:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:04,582 INFO L93 Difference]: Finished difference Result 1627 states and 1725 transitions. [2021-12-15 16:46:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:04,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-12-15 16:46:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:04,587 INFO L225 Difference]: With dead ends: 1627 [2021-12-15 16:46:04,587 INFO L226 Difference]: Without dead ends: 1627 [2021-12-15 16:46:04,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 16:46:04,588 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 674 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:04,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 1855 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-15 16:46:04,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-12-15 16:46:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1194. [2021-12-15 16:46:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 642 states have (on average 2.0062305295950154) internal successors, (1288), 1189 states have internal predecessors, (1288), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1294 transitions. [2021-12-15 16:46:04,610 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1294 transitions. Word has length 8 [2021-12-15 16:46:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:04,610 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1294 transitions. [2021-12-15 16:46:04,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:46:04,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1294 transitions. [2021-12-15 16:46:04,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 16:46:04,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:04,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:04,623 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 16:46:04,821 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 16:46:04,822 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-12-15 16:46:04,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:04,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716779705] [2021-12-15 16:46:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:04,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:04,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:04,824 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 16:46:04,824 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 16:46:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:04,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 16:46:04,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:05,014 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 16:46:05,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:05,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:05,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716779705] [2021-12-15 16:46:05,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716779705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:05,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:05,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:46:05,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548290786] [2021-12-15 16:46:05,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:05,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:05,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:05,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:05,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:05,017 INFO L87 Difference]: Start difference. First operand 1194 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 16:46:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:05,623 INFO L93 Difference]: Finished difference Result 1841 states and 1984 transitions. [2021-12-15 16:46:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 16:46:05,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 16:46:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:05,628 INFO L225 Difference]: With dead ends: 1841 [2021-12-15 16:46:05,628 INFO L226 Difference]: Without dead ends: 1841 [2021-12-15 16:46:05,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 16:46:05,629 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 754 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:05,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3645 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 16:46:05,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-12-15 16:46:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1439. [2021-12-15 16:46:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 887 states have (on average 1.9706877113866967) internal successors, (1748), 1434 states have internal predecessors, (1748), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1754 transitions. [2021-12-15 16:46:05,657 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1754 transitions. Word has length 11 [2021-12-15 16:46:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:05,657 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 1754 transitions. [2021-12-15 16:46:05,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 16:46:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1754 transitions. [2021-12-15 16:46:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 16:46:05,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:05,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:05,671 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 16:46:05,867 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 16:46:05,868 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-12-15 16:46:05,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:05,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085441955] [2021-12-15 16:46:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:05,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:05,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:05,870 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 16:46:05,873 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 16:46:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:06,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:46:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:06,023 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 16:46:06,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:06,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:06,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085441955] [2021-12-15 16:46:06,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085441955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:06,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:06,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:46:06,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923960164] [2021-12-15 16:46:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:06,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:06,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:06,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:06,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:06,026 INFO L87 Difference]: Start difference. First operand 1439 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 16:46:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:06,045 INFO L93 Difference]: Finished difference Result 1601 states and 1902 transitions. [2021-12-15 16:46:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:06,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 16:46:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:06,050 INFO L225 Difference]: With dead ends: 1601 [2021-12-15 16:46:06,050 INFO L226 Difference]: Without dead ends: 1601 [2021-12-15 16:46:06,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 16:46:06,051 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 583 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1998 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 16:46:06,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 1998 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:46:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-12-15 16:46:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1379. [2021-12-15 16:46:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 851 states have (on average 1.9529964747356052) internal successors, (1662), 1374 states have internal predecessors, (1662), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1668 transitions. [2021-12-15 16:46:06,074 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1668 transitions. Word has length 13 [2021-12-15 16:46:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:06,074 INFO L470 AbstractCegarLoop]: Abstraction has 1379 states and 1668 transitions. [2021-12-15 16:46:06,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 16:46:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1668 transitions. [2021-12-15 16:46:06,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 16:46:06,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:06,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:06,090 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 16:46:06,285 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 16:46:06,285 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:06,286 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-12-15 16:46:06,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:06,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678466687] [2021-12-15 16:46:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:06,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:06,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:06,287 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:46:06,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-15 16:46:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:06,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:46:06,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:06,448 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 16:46:06,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:06,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:06,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678466687] [2021-12-15 16:46:06,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678466687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:06,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:06,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:46:06,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153879639] [2021-12-15 16:46:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:06,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:06,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:06,452 INFO L87 Difference]: Start difference. First operand 1379 states and 1668 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16:46:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:06,519 INFO L93 Difference]: Finished difference Result 1573 states and 1846 transitions. [2021-12-15 16:46:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-12-15 16:46:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:06,524 INFO L225 Difference]: With dead ends: 1573 [2021-12-15 16:46:06,524 INFO L226 Difference]: Without dead ends: 1573 [2021-12-15 16:46:06,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 16:46:06,525 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 554 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:06,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3083 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:46:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-12-15 16:46:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1349. [2021-12-15 16:46:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 835 states have (on average 1.9209580838323352) internal successors, (1604), 1344 states have internal predecessors, (1604), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1610 transitions. [2021-12-15 16:46:06,546 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1610 transitions. Word has length 15 [2021-12-15 16:46:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:06,547 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 1610 transitions. [2021-12-15 16:46:06,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16:46:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1610 transitions. [2021-12-15 16:46:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 16:46:06,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:06,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:06,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:06,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:06,758 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2058395604, now seen corresponding path program 1 times [2021-12-15 16:46:06,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:06,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069862470] [2021-12-15 16:46:06,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:06,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:06,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:06,760 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:46:06,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-15 16:46:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:06,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 16:46:06,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:06,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 16:46:06,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 16:46:06,979 INFO L354 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2021-12-15 16:46:06,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 36 [2021-12-15 16:46:07,017 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-15 16:46:07,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2021-12-15 16:46:07,060 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 16:46:07,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:07,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:07,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069862470] [2021-12-15 16:46:07,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069862470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:07,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:07,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:46:07,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795247292] [2021-12-15 16:46:07,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:07,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:07,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:07,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:07,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:07,062 INFO L87 Difference]: Start difference. First operand 1349 states and 1610 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16:46:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:07,932 INFO L93 Difference]: Finished difference Result 1785 states and 2105 transitions. [2021-12-15 16:46:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:07,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-12-15 16:46:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:07,936 INFO L225 Difference]: With dead ends: 1785 [2021-12-15 16:46:07,936 INFO L226 Difference]: Without dead ends: 1785 [2021-12-15 16:46:07,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 16:46:07,937 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 422 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:07,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 3244 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 39 Unchecked, 0.8s Time] [2021-12-15 16:46:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2021-12-15 16:46:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1348. [2021-12-15 16:46:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 834 states have (on average 1.920863309352518) internal successors, (1602), 1343 states have internal predecessors, (1602), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1608 transitions. [2021-12-15 16:46:07,959 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1608 transitions. Word has length 16 [2021-12-15 16:46:07,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:07,959 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 1608 transitions. [2021-12-15 16:46:07,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16:46:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1608 transitions. [2021-12-15 16:46:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 16:46:07,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:07,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:07,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:08,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:08,171 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:08,171 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-12-15 16:46:08,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:08,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882808888] [2021-12-15 16:46:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:08,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:08,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:08,172 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:46:08,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-15 16:46:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:08,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:46:08,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:08,372 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 16:46:08,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:08,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882808888] [2021-12-15 16:46:08,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882808888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:08,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:08,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:46:08,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027896623] [2021-12-15 16:46:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:08,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:08,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:08,374 INFO L87 Difference]: Start difference. First operand 1348 states and 1608 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 16:46:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:08,396 INFO L93 Difference]: Finished difference Result 1288 states and 1522 transitions. [2021-12-15 16:46:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-12-15 16:46:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:08,400 INFO L225 Difference]: With dead ends: 1288 [2021-12-15 16:46:08,400 INFO L226 Difference]: Without dead ends: 1288 [2021-12-15 16:46:08,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 16:46:08,401 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1087 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1125 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 16:46:08,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 1125 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:46:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-12-15 16:46:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2021-12-15 16:46:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 798 states have (on average 1.899749373433584) internal successors, (1516), 1283 states have internal predecessors, (1516), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1522 transitions. [2021-12-15 16:46:08,420 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1522 transitions. Word has length 18 [2021-12-15 16:46:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:08,420 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1522 transitions. [2021-12-15 16:46:08,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 16:46:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1522 transitions. [2021-12-15 16:46:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 16:46:08,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:08,422 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] [2021-12-15 16:46:08,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:08,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:08,632 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:08,633 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-12-15 16:46:08,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:08,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231922423] [2021-12-15 16:46:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:08,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:08,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:08,635 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:46:08,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-15 16:46:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:08,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:46:08,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:08,839 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 16:46:08,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:08,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:08,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231922423] [2021-12-15 16:46:08,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231922423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:08,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:08,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:46:08,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961635152] [2021-12-15 16:46:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:08,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:08,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:08,840 INFO L87 Difference]: Start difference. First operand 1288 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 16:46:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:08,892 INFO L93 Difference]: Finished difference Result 1260 states and 1466 transitions. [2021-12-15 16:46:08,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:08,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-12-15 16:46:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:08,899 INFO L225 Difference]: With dead ends: 1260 [2021-12-15 16:46:08,900 INFO L226 Difference]: Without dead ends: 1260 [2021-12-15 16:46:08,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 16:46:08,901 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1058 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:08,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 2131 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:46:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-12-15 16:46:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1258. [2021-12-15 16:46:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 782 states have (on average 1.8644501278772379) internal successors, (1458), 1253 states have internal predecessors, (1458), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 16:46:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1464 transitions. [2021-12-15 16:46:08,923 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1464 transitions. Word has length 20 [2021-12-15 16:46:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:08,923 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 1464 transitions. [2021-12-15 16:46:08,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 16:46:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1464 transitions. [2021-12-15 16:46:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 16:46:08,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:08,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:08,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:09,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:09,136 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-12-15 16:46:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:09,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-12-15 16:46:09,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:09,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710977266] [2021-12-15 16:46:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:09,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:09,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:09,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:46:09,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-15 16:46:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:09,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:46:09,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:09,308 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 16:46:09,382 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 16:46:09,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:09,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:09,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710977266] [2021-12-15 16:46:09,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710977266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:09,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:09,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:46:09,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796957879] [2021-12-15 16:46:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:09,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:09,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:09,385 INFO L87 Difference]: Start difference. First operand 1258 states and 1464 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 16:46:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:09,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 16:46:09,534 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 104 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:09,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 68 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:46:09,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:09,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:09,745 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 16:46:09,749 INFO L158 Benchmark]: Toolchain (without parser) took 24145.82ms. Allocated memory was 52.4MB in the beginning and 148.9MB in the end (delta: 96.5MB). Free memory was 27.3MB in the beginning and 108.3MB in the end (delta: -81.0MB). Peak memory consumption was 90.8MB. Max. memory is 16.1GB. [2021-12-15 16:46:09,749 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.6MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:46:09,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 818.87ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 27.2MB in the beginning and 38.8MB in the end (delta: -11.7MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-12-15 16:46:09,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.76ms. Allocated memory is still 65.0MB. Free memory was 38.8MB in the beginning and 31.3MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 16:46:09,750 INFO L158 Benchmark]: Boogie Preprocessor took 118.34ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 31.3MB in the beginning and 53.4MB in the end (delta: -22.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-12-15 16:46:09,750 INFO L158 Benchmark]: RCFGBuilder took 4242.72ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 53.4MB in the beginning and 68.1MB in the end (delta: -14.8MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2021-12-15 16:46:09,751 INFO L158 Benchmark]: TraceAbstraction took 18845.37ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 68.1MB in the beginning and 108.3MB in the end (delta: -40.2MB). Peak memory consumption was 82.2MB. Max. memory is 16.1GB. [2021-12-15 16:46:09,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.6MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 818.87ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 27.2MB in the beginning and 38.8MB in the end (delta: -11.7MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.76ms. Allocated memory is still 65.0MB. Free memory was 38.8MB in the beginning and 31.3MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 118.34ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 31.3MB in the beginning and 53.4MB in the end (delta: -22.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * RCFGBuilder took 4242.72ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 53.4MB in the beginning and 68.1MB in the end (delta: -14.8MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. * TraceAbstraction took 18845.37ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 68.1MB in the beginning and 108.3MB in the end (delta: -40.2MB). Peak memory consumption was 82.2MB. 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 16:46:09,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable