./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.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_BER_test5-1.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 df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:44:43,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:44:43,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:44:43,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:44:43,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:44:43,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:44:43,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:44:43,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:44:43,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:44:43,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:44:43,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:44:43,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:44:43,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:44:43,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:44:43,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:44:43,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:44:43,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:44:43,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:44:43,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:44:43,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:44:43,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:44:43,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:44:43,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:44:43,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:44:43,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:44:43,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:44:43,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:44:43,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:44:43,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:44:43,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:44:43,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:44:43,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:44:43,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:44:43,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:44:43,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:44:43,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:44:43,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:44:43,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:44:43,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:44:43,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:44:43,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:44:43,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 16:44:43,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:44:43,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:44:43,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:44:43,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:44:43,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:44:43,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:44:43,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:44:43,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:44:43,690 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:44:43,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:44:43,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:44:43,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:44:43,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:44:43,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:44:43,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:44:43,700 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:44:43,700 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:44:43,700 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:44:43,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:44:43,701 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:44:43,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:44:43,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:44:43,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:44:43,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:44:43,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:44:43,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:44:43,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:44:43,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:44:43,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:44:43,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:44:43,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:44:43,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c [2021-12-15 16:44:44,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:44:44,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:44:44,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:44:44,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:44:44,089 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:44:44,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2021-12-15 16:44:44,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/282d88a68/348d17efe1634092a60cec7ba657a4e7/FLAG8d8b5222d [2021-12-15 16:44:44,662 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:44:44,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2021-12-15 16:44:44,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/282d88a68/348d17efe1634092a60cec7ba657a4e7/FLAG8d8b5222d [2021-12-15 16:44:45,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/282d88a68/348d17efe1634092a60cec7ba657a4e7 [2021-12-15 16:44:45,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:44:45,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:44:45,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:44:45,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:44:45,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:44:45,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:44:45" (1/1) ... [2021-12-15 16:44:45,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec84ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:45, skipping insertion in model container [2021-12-15 16:44:45,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:44:45" (1/1) ... [2021-12-15 16:44:45,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:44:45,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:44:45,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2021-12-15 16:44:45,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2021-12-15 16:44:45,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:44:45,723 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 16:44:45,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3bd07c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:45, skipping insertion in model container [2021-12-15 16:44:45,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:44:45,724 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 16:44:45,726 INFO L158 Benchmark]: Toolchain (without parser) took 594.12ms. Allocated memory is still 127.9MB. Free memory was 99.3MB in the beginning and 90.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:44:45,727 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:44:45,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.22ms. Allocated memory is still 127.9MB. Free memory was 99.1MB in the beginning and 90.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:44:45,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.22ms. Allocated memory is still 127.9MB. Free memory was 99.1MB in the beginning and 90.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.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 df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:44:47,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:44:47,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:44:47,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:44:47,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:44:47,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:44:47,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:44:47,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:44:47,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:44:47,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:44:47,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:44:47,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:44:47,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:44:47,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:44:47,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:44:47,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:44:47,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:44:47,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:44:47,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:44:47,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:44:47,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:44:47,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:44:47,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:44:47,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:44:47,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:44:47,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:44:47,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:44:47,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:44:47,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:44:47,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:44:47,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:44:47,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:44:47,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:44:47,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:44:47,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:44:47,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:44:47,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:44:47,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:44:47,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:44:47,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:44:47,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:44:47,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 16:44:47,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:44:47,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:44:47,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:44:47,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:44:47,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:44:47,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:44:47,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:44:47,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:44:47,607 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:44:47,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:44:47,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:44:47,609 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:44:47,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:44:47,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:44:47,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:44:47,609 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:44:47,610 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:44:47,610 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:44:47,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:44:47,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:44:47,610 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 16:44:47,611 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 16:44:47,611 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:44:47,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:44:47,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:44:47,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:44:47,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:44:47,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:44:47,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:44:47,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:44:47,622 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 16:44:47,622 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 16:44:47,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:44:47,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 16:44:47,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c [2021-12-15 16:44:47,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:44:47,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:44:47,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:44:47,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:44:47,952 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:44:47,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2021-12-15 16:44:48,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de602d086/c845d905859f4fc5a39fa373ffe563fb/FLAG90ff5dca5 [2021-12-15 16:44:48,574 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:44:48,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2021-12-15 16:44:48,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de602d086/c845d905859f4fc5a39fa373ffe563fb/FLAG90ff5dca5 [2021-12-15 16:44:49,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de602d086/c845d905859f4fc5a39fa373ffe563fb [2021-12-15 16:44:49,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:44:49,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:44:49,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:44:49,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:44:49,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:44:49,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:49,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a296bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49, skipping insertion in model container [2021-12-15 16:44:49,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:49,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:44:49,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:44:49,474 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2021-12-15 16:44:49,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2021-12-15 16:44:49,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:44:49,672 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 16:44:49,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:44:49,696 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2021-12-15 16:44:49,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2021-12-15 16:44:49,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:44:49,755 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:44:49,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2021-12-15 16:44:49,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2021-12-15 16:44:49,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:44:49,869 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:44:49,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49 WrapperNode [2021-12-15 16:44:49,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:44:49,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:44:49,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:44:49,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:44:49,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:49,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,051 INFO L137 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1414 [2021-12-15 16:44:50,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:44:50,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:44:50,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:44:50,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:44:50,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:44:50,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:44:50,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:44:50,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:44:50,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (1/1) ... [2021-12-15 16:44:50,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:44:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:44:50,220 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 16:44:50,243 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 16:44:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 16:44:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 16:44:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 16:44:50,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 16:44:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 16:44:50,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 16:44:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 16:44:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:44:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 16:44:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 16:44:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 16:44:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 16:44:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 16:44:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 16:44:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 16:44:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:44:50,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:44:50,557 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:44:50,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:44:50,561 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 16:44:55,709 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:44:55,721 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:44:55,722 INFO L301 CfgBuilder]: Removed 83 assume(true) statements. [2021-12-15 16:44:55,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:44:55 BoogieIcfgContainer [2021-12-15 16:44:55,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:44:55,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:44:55,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:44:55,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:44:55,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:44:49" (1/3) ... [2021-12-15 16:44:55,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7846eac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:44:55, skipping insertion in model container [2021-12-15 16:44:55,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:44:49" (2/3) ... [2021-12-15 16:44:55,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7846eac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:44:55, skipping insertion in model container [2021-12-15 16:44:55,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:44:55" (3/3) ... [2021-12-15 16:44:55,732 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-1.i [2021-12-15 16:44:55,736 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:44:55,736 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 729 error locations. [2021-12-15 16:44:55,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:44:55,777 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 16:44:55,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 729 error locations. [2021-12-15 16:44:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 1456 states, 719 states have (on average 2.2378303198887344) internal successors, (1609), 1447 states have internal predecessors, (1609), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:44:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:44:55,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:44:55,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:44:55,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-12-15 16:44:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:44:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-12-15 16:44:55,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:44:55,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818266955] [2021-12-15 16:44:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:44:55,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:44:55,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:44:55,842 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 16:44:55,873 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 16:44:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:44:56,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 16:44:56,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:44:56,059 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 16:44:56,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:44:56,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:44:56,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818266955] [2021-12-15 16:44:56,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818266955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:44:56,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:44:56,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:44:56,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119184117] [2021-12-15 16:44:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:44:56,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 16:44:56,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:44:56,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 16:44:56,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:44:56,126 INFO L87 Difference]: Start difference. First operand has 1456 states, 719 states have (on average 2.2378303198887344) internal successors, (1609), 1447 states have internal predecessors, (1609), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:44:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:44:56,192 INFO L93 Difference]: Finished difference Result 1438 states and 1521 transitions. [2021-12-15 16:44:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 16:44:56,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:44:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:44:56,229 INFO L225 Difference]: With dead ends: 1438 [2021-12-15 16:44:56,230 INFO L226 Difference]: Without dead ends: 1436 [2021-12-15 16:44:56,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:44:56,234 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:44:56,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:44:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-12-15 16:44:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2021-12-15 16:44:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 710 states have (on average 2.108450704225352) internal successors, (1497), 1427 states have internal predecessors, (1497), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:44:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1519 transitions. [2021-12-15 16:44:56,356 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1519 transitions. Word has length 5 [2021-12-15 16:44:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:44:56,356 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 1519 transitions. [2021-12-15 16:44:56,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:44:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1519 transitions. [2021-12-15 16:44:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:44:56,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:44:56,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:44:56,372 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 16:44:56,569 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 16:44:56,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-12-15 16:44:56,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:44:56,570 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-12-15 16:44:56,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:44:56,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787848594] [2021-12-15 16:44:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:44:56,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:44:56,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:44:56,573 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 16:44:56,579 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 16:44:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:44:56,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:44:56,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:44:56,770 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 16:44:56,783 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 16:44:56,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:44:56,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:44:56,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787848594] [2021-12-15 16:44:56,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787848594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:44:56,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:44:56,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:44:56,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551186103] [2021-12-15 16:44:56,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:44:56,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:44:56,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:44:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:44:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:44:56,798 INFO L87 Difference]: Start difference. First operand 1436 states and 1519 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:44:58,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:44:58,909 INFO L93 Difference]: Finished difference Result 1692 states and 1818 transitions. [2021-12-15 16:44:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:44:58,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:44:58,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:44:58,916 INFO L225 Difference]: With dead ends: 1692 [2021-12-15 16:44:58,916 INFO L226 Difference]: Without dead ends: 1692 [2021-12-15 16:44:58,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:44:58,918 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 1369 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:44:58,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1221 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-15 16:44:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-12-15 16:44:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1421. [2021-12-15 16:44:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 786 states have (on average 1.960559796437659) internal successors, (1541), 1412 states have internal predecessors, (1541), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:44:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1563 transitions. [2021-12-15 16:44:58,960 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1563 transitions. Word has length 5 [2021-12-15 16:44:58,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:44:58,960 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 1563 transitions. [2021-12-15 16:44:58,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:44:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1563 transitions. [2021-12-15 16:44:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:44:58,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:44:58,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:44:58,976 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 16:44:59,170 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 16:44:59,171 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-12-15 16:44:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:44:59,172 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-12-15 16:44:59,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:44:59,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727895205] [2021-12-15 16:44:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:44:59,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:44:59,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:44:59,173 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 16:44:59,175 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 16:44:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:44:59,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:44:59,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:44:59,305 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 16:44:59,319 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 16:44:59,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:44:59,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:44:59,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727895205] [2021-12-15 16:44:59,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727895205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:44:59,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:44:59,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:44:59,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773066875] [2021-12-15 16:44:59,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:44:59,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:44:59,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:44:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:44:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:44:59,322 INFO L87 Difference]: Start difference. First operand 1421 states and 1563 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:02,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:02,110 INFO L93 Difference]: Finished difference Result 1943 states and 2134 transitions. [2021-12-15 16:45:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:02,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:45:02,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:02,118 INFO L225 Difference]: With dead ends: 1943 [2021-12-15 16:45:02,118 INFO L226 Difference]: Without dead ends: 1943 [2021-12-15 16:45:02,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:02,119 INFO L933 BasicCegarLoop]: 1351 mSDtfsCounter, 743 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:02,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 1956 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-15 16:45:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2021-12-15 16:45:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1577. [2021-12-15 16:45:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 952 states have (on average 1.940126050420168) internal successors, (1847), 1568 states have internal predecessors, (1847), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 1869 transitions. [2021-12-15 16:45:02,165 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 1869 transitions. Word has length 5 [2021-12-15 16:45:02,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:02,166 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 1869 transitions. [2021-12-15 16:45:02,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 1869 transitions. [2021-12-15 16:45:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:45:02,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:02,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:45:02,178 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 16:45:02,375 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 16:45:02,375 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-12-15 16:45:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-12-15 16:45:02,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:02,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056003110] [2021-12-15 16:45:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:02,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:02,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:02,379 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 16:45:02,381 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 16:45:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:02,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:45:02,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:02,517 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 16:45:02,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:02,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:02,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056003110] [2021-12-15 16:45:02,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056003110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:02,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:02,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:02,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64620715] [2021-12-15 16:45:02,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:02,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:02,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:02,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:02,524 INFO L87 Difference]: Start difference. First operand 1577 states and 1869 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:02,631 INFO L93 Difference]: Finished difference Result 3137 states and 3721 transitions. [2021-12-15 16:45:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:02,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-15 16:45:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:02,646 INFO L225 Difference]: With dead ends: 3137 [2021-12-15 16:45:02,646 INFO L226 Difference]: Without dead ends: 3137 [2021-12-15 16:45:02,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:02,649 INFO L933 BasicCegarLoop]: 1922 mSDtfsCounter, 1377 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:02,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 3330 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:45:02,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2021-12-15 16:45:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 1579. [2021-12-15 16:45:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 954 states have (on average 1.9381551362683438) internal successors, (1849), 1570 states have internal predecessors, (1849), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 1871 transitions. [2021-12-15 16:45:02,692 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 1871 transitions. Word has length 6 [2021-12-15 16:45:02,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:02,692 INFO L470 AbstractCegarLoop]: Abstraction has 1579 states and 1871 transitions. [2021-12-15 16:45:02,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 1871 transitions. [2021-12-15 16:45:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 16:45:02,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:02,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:02,703 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 16:45:02,903 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 16:45:02,903 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-12-15 16:45:02,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-12-15 16:45:02,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:02,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870998615] [2021-12-15 16:45:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:02,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:02,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:02,905 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 16:45:02,906 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 16:45:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:45:03,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:03,058 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 16:45:03,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:03,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:03,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870998615] [2021-12-15 16:45:03,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870998615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:03,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:03,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:03,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976924415] [2021-12-15 16:45:03,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:03,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:03,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:03,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:03,061 INFO L87 Difference]: Start difference. First operand 1579 states and 1871 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:03,091 INFO L93 Difference]: Finished difference Result 1543 states and 1834 transitions. [2021-12-15 16:45:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:03,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 16:45:03,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:03,096 INFO L225 Difference]: With dead ends: 1543 [2021-12-15 16:45:03,096 INFO L226 Difference]: Without dead ends: 1543 [2021-12-15 16:45:03,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:03,097 INFO L933 BasicCegarLoop]: 1370 mSDtfsCounter, 1340 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1398 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 16:45:03,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 1398 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-12-15 16:45:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1537. [2021-12-15 16:45:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 936 states have (on average 1.9294871794871795) internal successors, (1806), 1528 states have internal predecessors, (1806), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1828 transitions. [2021-12-15 16:45:03,131 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1828 transitions. Word has length 11 [2021-12-15 16:45:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:03,132 INFO L470 AbstractCegarLoop]: Abstraction has 1537 states and 1828 transitions. [2021-12-15 16:45:03,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1828 transitions. [2021-12-15 16:45:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 16:45:03,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:03,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:03,145 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 16:45:03,343 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 16:45:03,343 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-12-15 16:45:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-12-15 16:45:03,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:03,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060586263] [2021-12-15 16:45:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:03,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:03,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:03,345 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 16:45:03,347 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 16:45:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:03,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:03,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:03,526 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 16:45:03,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:03,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:03,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060586263] [2021-12-15 16:45:03,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060586263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:03,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:03,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:45:03,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318288443] [2021-12-15 16:45:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:03,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:03,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:03,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:03,532 INFO L87 Difference]: Start difference. First operand 1537 states and 1828 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:03,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:03,594 INFO L93 Difference]: Finished difference Result 1522 states and 1806 transitions. [2021-12-15 16:45:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:03,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-15 16:45:03,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:03,599 INFO L225 Difference]: With dead ends: 1522 [2021-12-15 16:45:03,599 INFO L226 Difference]: Without dead ends: 1522 [2021-12-15 16:45:03,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:03,600 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 1311 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 2671 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 16:45:03,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1322 Valid, 2671 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:03,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-12-15 16:45:03,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1515. [2021-12-15 16:45:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 928 states have (on average 1.9148706896551724) internal successors, (1777), 1506 states have internal predecessors, (1777), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 16:45:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1799 transitions. [2021-12-15 16:45:03,624 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1799 transitions. Word has length 13 [2021-12-15 16:45:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:03,625 INFO L470 AbstractCegarLoop]: Abstraction has 1515 states and 1799 transitions. [2021-12-15 16:45:03,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1799 transitions. [2021-12-15 16:45:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 16:45:03,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:03,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:03,638 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 16:45:03,842 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 16:45:03,842 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 725 more)] === [2021-12-15 16:45:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-12-15 16:45:03,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129057262] [2021-12-15 16:45:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:03,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:03,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:03,844 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 16:45:03,844 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 16:45:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:03,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:03,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:03,995 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 16:45:04,063 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 16:45:04,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:04,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:04,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129057262] [2021-12-15 16:45:04,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129057262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:04,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:04,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:04,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326615372] [2021-12-15 16:45:04,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:04,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:04,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:04,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:04,066 INFO L87 Difference]: Start difference. First operand 1515 states and 1799 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:04,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:45:04,237 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 164 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:04,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 73 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:45:04,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-15 16:45:04,438 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 16:45:04,440 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 16:45:04,443 INFO L158 Benchmark]: Toolchain (without parser) took 15406.90ms. Allocated memory was 54.5MB in the beginning and 148.9MB in the end (delta: 94.4MB). Free memory was 28.8MB in the beginning and 37.8MB in the end (delta: -9.0MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. [2021-12-15 16:45:04,443 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:04,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 831.70ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 28.5MB in the beginning and 31.6MB in the end (delta: -3.1MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2021-12-15 16:45:04,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 180.95ms. Allocated memory is still 71.3MB. Free memory was 31.6MB in the beginning and 41.2MB in the end (delta: -9.6MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-12-15 16:45:04,444 INFO L158 Benchmark]: Boogie Preprocessor took 112.30ms. Allocated memory is still 71.3MB. Free memory was 40.9MB in the beginning and 31.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:45:04,444 INFO L158 Benchmark]: RCFGBuilder took 5559.28ms. Allocated memory was 71.3MB in the beginning and 123.7MB in the end (delta: 52.4MB). Free memory was 31.1MB in the beginning and 61.0MB in the end (delta: -29.9MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2021-12-15 16:45:04,444 INFO L158 Benchmark]: TraceAbstraction took 8716.36ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 60.1MB in the beginning and 37.8MB in the end (delta: 22.4MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2021-12-15 16:45:04,446 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 54.5MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 831.70ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 28.5MB in the beginning and 31.6MB in the end (delta: -3.1MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 180.95ms. Allocated memory is still 71.3MB. Free memory was 31.6MB in the beginning and 41.2MB in the end (delta: -9.6MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 112.30ms. Allocated memory is still 71.3MB. Free memory was 40.9MB in the beginning and 31.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 5559.28ms. Allocated memory was 71.3MB in the beginning and 123.7MB in the end (delta: 52.4MB). Free memory was 31.1MB in the beginning and 61.0MB in the end (delta: -29.9MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8716.36ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 60.1MB in the beginning and 37.8MB in the end (delta: 22.4MB). Peak memory consumption was 48.2MB. 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 16:45:04,492 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