./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/hostid.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de0fc62ae58e6d221c3194714bc6cea21909b72dd1b37b4566b87d84683f34c8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:09:42,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:09:42,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:09:42,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:09:42,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:09:42,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:09:42,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:09:42,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:09:42,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:09:42,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:09:42,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:09:42,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:09:42,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:09:42,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:09:42,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:09:42,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:09:42,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:09:42,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:09:42,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:09:42,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:09:42,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:09:42,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:09:42,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:09:42,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:09:42,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:09:42,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:09:42,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:09:42,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:09:42,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:09:42,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:09:42,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:09:42,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:09:42,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:09:42,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:09:42,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:09:42,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:09:42,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:09:42,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:09:42,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:09:42,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:09:42,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:09:42,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-23 17:09:43,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:09:43,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:09:43,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:09:43,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:09:43,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:09:43,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:09:43,016 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:09:43,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:09:43,016 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:09:43,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:09:43,018 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:09:43,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:09:43,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:09:43,019 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:09:43,019 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:09:43,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:09:43,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:09:43,020 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:09:43,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:09:43,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:09:43,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:09:43,022 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:09:43,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:09:43,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:09:43,022 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:09:43,023 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:09:43,023 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:09:43,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:09:43,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:09:43,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:09:43,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:09:43,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:09:43,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:09:43,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:09:43,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:09:43,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:09:43,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:09:43,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:09:43,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:09:43,026 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de0fc62ae58e6d221c3194714bc6cea21909b72dd1b37b4566b87d84683f34c8 [2021-11-23 17:09:43,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:09:43,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:09:43,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:09:43,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:09:43,318 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:09:43,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-11-23 17:09:43,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data/7e5c68055/361118b60395415a8687d634bcf03174/FLAG00d8260ba [2021-11-23 17:09:44,060 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:09:44,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-11-23 17:09:44,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data/7e5c68055/361118b60395415a8687d634bcf03174/FLAG00d8260ba [2021-11-23 17:09:44,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data/7e5c68055/361118b60395415a8687d634bcf03174 [2021-11-23 17:09:44,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:09:44,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:09:44,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:44,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:09:44,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:09:44,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:44" (1/1) ... [2021-11-23 17:09:44,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158a4d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:44, skipping insertion in model container [2021-11-23 17:09:44,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:44" (1/1) ... [2021-11-23 17:09:44,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:09:44,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:09:45,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:09:45,305 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) [2021-11-23 17:09:45,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39b403f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:45, skipping insertion in model container [2021-11-23 17:09:45,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:45,310 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 17:09:45,312 INFO L158 Benchmark]: Toolchain (without parser) took 1070.40ms. Allocated memory is still 98.6MB. Free memory was 64.3MB in the beginning and 43.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 17:09:45,313 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 79.7MB. Free memory is still 58.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:09:45,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1067.58ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 43.4MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 17:09:45,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 79.7MB. Free memory is still 58.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1067.58ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 43.4MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1774]: 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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de0fc62ae58e6d221c3194714bc6cea21909b72dd1b37b4566b87d84683f34c8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:09:47,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:09:47,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:09:47,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:09:47,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:09:47,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:09:47,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:09:47,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:09:47,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:09:47,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:09:47,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:09:47,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:09:47,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:09:47,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:09:47,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:09:47,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:09:47,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:09:47,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:09:47,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:09:47,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:09:47,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:09:47,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:09:47,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:09:47,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:09:47,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:09:47,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:09:47,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:09:47,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:09:47,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:09:47,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:09:47,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:09:47,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:09:47,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:09:47,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:09:47,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:09:47,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:09:47,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:09:47,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:09:47,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:09:47,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:09:47,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:09:47,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-11-23 17:09:47,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:09:47,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:09:47,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:09:47,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:09:47,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:09:47,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:09:47,934 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:09:47,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:09:47,934 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:09:47,935 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:09:47,936 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:09:47,936 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:09:47,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:09:47,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:09:47,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:09:47,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:09:47,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:09:47,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:09:47,939 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:09:47,939 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:09:47,939 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:09:47,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:09:47,940 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:09:47,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:09:47,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:09:47,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:09:47,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:09:47,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:09:47,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:09:47,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:09:47,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:09:47,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:09:47,942 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:09:47,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:09:47,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:09:47,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:09:47,943 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de0fc62ae58e6d221c3194714bc6cea21909b72dd1b37b4566b87d84683f34c8 [2021-11-23 17:09:48,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:09:48,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:09:48,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:09:48,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:09:48,414 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:09:48,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-11-23 17:09:48,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data/3c8aae083/8fcde5b6d40f4e4fab5a33ed78871853/FLAGba6ac5b33 [2021-11-23 17:09:49,246 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:09:49,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-11-23 17:09:49,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data/3c8aae083/8fcde5b6d40f4e4fab5a33ed78871853/FLAGba6ac5b33 [2021-11-23 17:09:49,368 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/data/3c8aae083/8fcde5b6d40f4e4fab5a33ed78871853 [2021-11-23 17:09:49,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:09:49,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:09:49,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:49,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:09:49,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:09:49,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:49" (1/1) ... [2021-11-23 17:09:49,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc1e89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:49, skipping insertion in model container [2021-11-23 17:09:49,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:09:49" (1/1) ... [2021-11-23 17:09:49,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:09:49,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:09:50,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:09:50,524 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 17:09:50,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:09:50,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:09:50,639 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:09:50,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:09:50,863 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:09:50,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50 WrapperNode [2021-11-23 17:09:50,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:09:50,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:09:50,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:09:50,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:09:50,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:50,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:50,960 INFO L137 Inliner]: procedures = 529, calls = 68, calls flagged for inlining = 7, calls inlined = 6, statements flattened = 137 [2021-11-23 17:09:50,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:09:50,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:09:50,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:09:50,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:09:50,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:50,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:50,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:50,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:51,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:51,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:51,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:51,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:09:51,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:09:51,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:09:51,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:09:51,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (1/1) ... [2021-11-23 17:09:51,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:09:51,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:09:51,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:09:51,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:09:51,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:09:51,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:09:51,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:09:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-11-23 17:09:51,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:09:51,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:09:51,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:09:51,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:09:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:09:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:09:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:09:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 17:09:51,534 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:09:51,536 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:09:52,275 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:09:52,288 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:09:52,290 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 17:09:52,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:09:52 BoogieIcfgContainer [2021-11-23 17:09:52,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:09:52,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:09:52,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:09:52,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:09:52,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:09:49" (1/3) ... [2021-11-23 17:09:52,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbf486d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:09:52, skipping insertion in model container [2021-11-23 17:09:52,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:09:50" (2/3) ... [2021-11-23 17:09:52,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbf486d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:09:52, skipping insertion in model container [2021-11-23 17:09:52,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:09:52" (3/3) ... [2021-11-23 17:09:52,305 INFO L111 eAbstractionObserver]: Analyzing ICFG hostid.i [2021-11-23 17:09:52,309 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:09:52,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-11-23 17:09:52,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:09:52,356 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 [2021-11-23 17:09:52,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-11-23 17:09:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 55 states have (on average 1.8545454545454545) internal successors, (102), 92 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 17:09:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 17:09:52,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:09:52,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 17:09:52,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-23 17:09:52,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:09:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-23 17:09:52,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:09:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530054481] [2021-11-23 17:09:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:09:52,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:09:52,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:09:52,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:09:52,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:09:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:09:52,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:09:52,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:09:52,676 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 [2021-11-23 17:09:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:09:52,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:09:52,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:09:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530054481] [2021-11-23 17:09:52,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530054481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:09:52,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:09:52,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:09:52,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716925412] [2021-11-23 17:09:52,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:09:52,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:09:52,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:09:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:09:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:09:52,770 INFO L87 Difference]: Start difference. First operand has 95 states, 55 states have (on average 1.8545454545454545) internal successors, (102), 92 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:09:53,079 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2021-11-23 17:09:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:09:53,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 17:09:53,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:09:53,091 INFO L225 Difference]: With dead ends: 109 [2021-11-23 17:09:53,091 INFO L226 Difference]: Without dead ends: 107 [2021-11-23 17:09:53,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:09:53,096 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 70 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 17:09:53,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 17:09:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-23 17:09:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 91. [2021-11-23 17:09:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 88 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 17:09:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-11-23 17:09:53,157 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 3 [2021-11-23 17:09:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:09:53,157 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-11-23 17:09:53,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-11-23 17:09:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 17:09:53,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:09:53,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 17:09:53,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:09:53,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:09:53,373 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-23 17:09:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:09:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-23 17:09:53,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:09:53,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981440259] [2021-11-23 17:09:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:09:53,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:09:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:09:53,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:09:53,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:09:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:09:53,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:09:53,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:09:53,544 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 [2021-11-23 17:09:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:09:53,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:09:53,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:09:53,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981440259] [2021-11-23 17:09:53,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981440259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:09:53,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:09:53,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:09:53,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3176279] [2021-11-23 17:09:53,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:09:53,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:09:53,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:09:53,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:09:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:09:53,569 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:09:53,970 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2021-11-23 17:09:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:09:53,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 17:09:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:09:53,972 INFO L225 Difference]: With dead ends: 90 [2021-11-23 17:09:53,972 INFO L226 Difference]: Without dead ends: 90 [2021-11-23 17:09:53,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:09:53,974 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 9 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 17:09:53,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 142 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 17:09:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-23 17:09:53,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-23 17:09:53,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 87 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 17:09:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2021-11-23 17:09:53,985 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 3 [2021-11-23 17:09:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:09:53,986 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2021-11-23 17:09:53,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2021-11-23 17:09:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:09:53,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:09:53,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:09:54,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 17:09:54,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:09:54,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-23 17:09:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:09:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-11-23 17:09:54,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:09:54,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222550329] [2021-11-23 17:09:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:09:54,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:09:54,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:09:54,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:09:54,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:09:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:09:54,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 17:09:54,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:09:54,373 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 [2021-11-23 17:09:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:09:54,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:09:54,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:09:54,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222550329] [2021-11-23 17:09:54,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222550329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:09:54,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:09:54,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:09:54,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567119193] [2021-11-23 17:09:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:09:54,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:09:54,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:09:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:09:54,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:09:54,448 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-23 17:09:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:09:54,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:09:54,525 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 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 [2021-11-23 17:09:54,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:09:54,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:09:54,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:09:54,727 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) [2021-11-23 17:09:54,731 INFO L158 Benchmark]: Toolchain (without parser) took 5358.04ms. Allocated memory was 58.7MB in the beginning and 104.9MB in the end (delta: 46.1MB). Free memory was 34.5MB in the beginning and 48.0MB in the end (delta: -13.5MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2021-11-23 17:09:54,732 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 58.7MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:09:54,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1490.37ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 34.2MB in the beginning and 38.5MB in the end (delta: -4.2MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2021-11-23 17:09:54,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.03ms. Allocated memory is still 86.0MB. Free memory was 38.5MB in the beginning and 60.6MB in the end (delta: -22.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-11-23 17:09:54,733 INFO L158 Benchmark]: Boogie Preprocessor took 95.54ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 57.1MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:09:54,734 INFO L158 Benchmark]: RCFGBuilder took 1235.41ms. Allocated memory is still 86.0MB. Free memory was 57.1MB in the beginning and 57.9MB in the end (delta: -813.2kB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-23 17:09:54,734 INFO L158 Benchmark]: TraceAbstraction took 2434.96ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 57.4MB in the beginning and 48.0MB in the end (delta: 9.4MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2021-11-23 17:09:54,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 58.7MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1490.37ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 34.2MB in the beginning and 38.5MB in the end (delta: -4.2MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.03ms. Allocated memory is still 86.0MB. Free memory was 38.5MB in the beginning and 60.6MB in the end (delta: -22.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.54ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 57.1MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1235.41ms. Allocated memory is still 86.0MB. Free memory was 57.1MB in the beginning and 57.9MB in the end (delta: -813.2kB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2434.96ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 57.4MB in the beginning and 48.0MB in the end (delta: 9.4MB). Peak memory consumption was 28.1MB. 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. [2021-11-23 17:09:54,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_547a3763-399e-4218-a869-441745fe8e51/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable