./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8 --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 32bit --witnessprinter.graph.data.programhash 053e01a2cec6b58c9d93ee902fbde2c977d3366f ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8 --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 32bit --witnessprinter.graph.data.programhash 053e01a2cec6b58c9d93ee902fbde2c977d3366f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:55:54,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:55:54,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:55:54,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:55:54,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:55:54,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:55:54,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:55:54,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:55:54,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:55:54,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:55:54,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:55:54,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:55:54,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:55:54,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:55:54,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:55:54,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:55:54,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:55:54,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:55:54,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:55:54,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:55:54,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:55:54,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:55:54,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:55:54,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:55:54,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:55:54,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:55:54,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:55:54,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:55:54,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:55:54,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:55:54,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:55:54,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:55:54,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:55:54,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:55:54,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:55:54,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:55:54,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:55:54,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:55:54,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:55:54,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:55:54,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:55:54,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:55:54,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:55:54,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:55:54,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:55:54,310 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:55:54,310 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:55:54,310 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:55:54,311 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:55:54,311 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:55:54,311 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:55:54,311 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:55:54,311 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:55:54,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:55:54,312 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:55:54,312 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:55:54,312 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:55:54,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:55:54,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:55:54,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:55:54,313 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:55:54,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:55:54,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:55:54,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:55:54,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:55:54,314 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:55:54,315 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:55:54,315 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:55:54,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:55:54,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:55:54,315 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:55:54,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:55:54,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:55:54,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:55:54,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:55:54,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:55:54,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:55:54,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:55:54,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:55:54,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:55:54,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:55:54,318 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_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 053e01a2cec6b58c9d93ee902fbde2c977d3366f [2021-10-13 07:55:54,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:55:54,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:55:54,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:55:54,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:55:54,592 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:55:54,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero.c [2021-10-13 07:55:54,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data/c6b7aa7b9/25fa2e255d0f41f4935c9667290b740f/FLAGcb615d6bb [2021-10-13 07:55:55,178 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:55:55,179 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/sv-benchmarks/c/ldv-memsafety/memsetNonZero.c [2021-10-13 07:55:55,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data/c6b7aa7b9/25fa2e255d0f41f4935c9667290b740f/FLAGcb615d6bb [2021-10-13 07:55:55,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data/c6b7aa7b9/25fa2e255d0f41f4935c9667290b740f [2021-10-13 07:55:55,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:55:55,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:55:55,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:55:55,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:55:55,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:55:55,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f536447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55, skipping insertion in model container [2021-10-13 07:55:55,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:55:55,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:55:55,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:55:55,800 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:55:55,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:55:55,839 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:55:55,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55 WrapperNode [2021-10-13 07:55:55,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:55:55,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:55:55,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:55:55,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:55:55,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:55:55,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:55:55,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:55:55,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:55:55,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:55:55,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:55:55,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:55:55,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:55:55,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (1/1) ... [2021-10-13 07:55:55,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:55:55,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:55:55,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:55:55,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:55:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:55:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:55:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:55:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:55:56,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:55:56,210 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 07:55:56,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:55:56 BoogieIcfgContainer [2021-10-13 07:55:56,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:55:56,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:55:56,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:55:56,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:55:56,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:55:55" (1/3) ... [2021-10-13 07:55:56,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df278f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:55:56, skipping insertion in model container [2021-10-13 07:55:56,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:55" (2/3) ... [2021-10-13 07:55:56,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df278f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:55:56, skipping insertion in model container [2021-10-13 07:55:56,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:55:56" (3/3) ... [2021-10-13 07:55:56,235 INFO L111 eAbstractionObserver]: Analyzing ICFG memsetNonZero.c [2021-10-13 07:55:56,241 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:55:56,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:55:56,284 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:55:56,291 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, mConcurrency=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 [2021-10-13 07:55:56,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:55:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 5 states have (on average 1.8) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 07:55:56,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:56,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 07:55:56,318 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:55:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:56,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1553, now seen corresponding path program 1 times [2021-10-13 07:55:56,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:56,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837302781] [2021-10-13 07:55:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:56,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:56,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:56,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837302781] [2021-10-13 07:55:56,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837302781] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:56,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:56,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:55:56,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926209419] [2021-10-13 07:55:56,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:55:56,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:55:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:56,486 INFO L87 Difference]: Start difference. First operand has 9 states, 5 states have (on average 1.8) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 07:55:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:56,511 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-10-13 07:55:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:55:56,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-13 07:55:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:56,520 INFO L225 Difference]: With dead ends: 8 [2021-10-13 07:55:56,521 INFO L226 Difference]: Without dead ends: 7 [2021-10-13 07:55:56,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-13 07:55:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 07:55:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-13 07:55:56,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 2 [2021-10-13 07:55:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:56,568 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-13 07:55:56,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 07:55:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-13 07:55:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:55:56,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:56,569 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:55:56,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:55:56,570 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:55:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash 48179, now seen corresponding path program 1 times [2021-10-13 07:55:56,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:56,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69779893] [2021-10-13 07:55:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:56,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:56,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:56,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69779893] [2021-10-13 07:55:56,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69779893] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:56,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:56,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:55:56,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106797826] [2021-10-13 07:55:56,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:55:56,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:56,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:55:56,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:56,683 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2021-10-13 07:55:56,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:56,704 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-10-13 07:55:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:55:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2021-10-13 07:55:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:56,706 INFO L225 Difference]: With dead ends: 6 [2021-10-13 07:55:56,706 INFO L226 Difference]: Without dead ends: 6 [2021-10-13 07:55:56,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-13 07:55:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-13 07:55:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-10-13 07:55:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-13 07:55:56,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2021-10-13 07:55:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:56,709 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-13 07:55:56,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2021-10-13 07:55:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-13 07:55:56,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:55:56,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:56,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:55:56,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:55:56,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:55:56,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:56,712 INFO L82 PathProgramCache]: Analyzing trace with hash 46301616, now seen corresponding path program 1 times [2021-10-13 07:55:56,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:56,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686794653] [2021-10-13 07:55:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:56,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:56,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:56,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686794653] [2021-10-13 07:55:56,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686794653] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:56,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:56,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:55:56,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221349113] [2021-10-13 07:55:56,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:55:56,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:56,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:55:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:55:56,813 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 4 states, 4 states have (on average 1.25) 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) [2021-10-13 07:55:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:56,826 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-10-13 07:55:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:55:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) 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 [2021-10-13 07:55:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:56,828 INFO L225 Difference]: With dead ends: 7 [2021-10-13 07:55:56,828 INFO L226 Difference]: Without dead ends: 7 [2021-10-13 07:55:56,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:55:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-13 07:55:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 07:55:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:55:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-13 07:55:56,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-13 07:55:56,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:56,832 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-13 07:55:56,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) 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) [2021-10-13 07:55:56,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-13 07:55:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:55:56,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:56,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:55:56,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:55:56,834 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:55:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:56,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1435340626, now seen corresponding path program 1 times [2021-10-13 07:55:56,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:56,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103226352] [2021-10-13 07:55:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:56,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:56,898 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:56,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103226352] [2021-10-13 07:55:56,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103226352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:55:56,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138204551] [2021-10-13 07:55:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:56,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:55:56,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:55:56,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:55:56,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:55:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:56,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:55:56,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:57,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:57,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138204551] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:55:57,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5003820] [2021-10-13 07:55:57,145 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-13 07:55:57,145 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:55:57,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:55:57,156 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:55:57,157 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:55:57,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:55:57,192 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:55:57,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:55:57,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-13 07:55:57,194 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:55:57,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:55:57,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-13 07:55:57,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-13 07:55:57,235 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 [2021-10-13 07:55:57,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:55:57,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-13 07:55:57,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:55:57,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-13 07:55:57,239 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:55:57,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:55:57,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:55:57,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:55:57,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-13 07:55:57,260 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:55:57,260 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:54 [2021-10-13 07:55:57,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:57,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:55:57,486 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_9| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) 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) [2021-10-13 07:55:57,490 INFO L168 Benchmark]: Toolchain (without parser) took 1913.23 ms. Allocated memory was 111.1 MB in the beginning and 155.2 MB in the end (delta: 44.0 MB). Free memory was 77.3 MB in the beginning and 105.2 MB in the end (delta: -28.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:57,490 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory is still 33.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:55:57,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.64 ms. Allocated memory is still 111.1 MB. Free memory was 77.1 MB in the beginning and 87.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:57,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:55:57,498 INFO L168 Benchmark]: Boogie Preprocessor took 31.73 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 85.1 MB in the end (delta: 969.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:57,499 INFO L168 Benchmark]: RCFGBuilder took 299.96 ms. Allocated memory is still 111.1 MB. Free memory was 85.1 MB in the beginning and 75.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:57,499 INFO L168 Benchmark]: TraceAbstraction took 1269.24 ms. Allocated memory was 111.1 MB in the beginning and 155.2 MB in the end (delta: 44.0 MB). Free memory was 75.3 MB in the beginning and 105.2 MB in the end (delta: -29.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:57,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory is still 33.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.64 ms. Allocated memory is still 111.1 MB. Free memory was 77.1 MB in the beginning and 87.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.73 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 85.1 MB in the end (delta: 969.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 299.96 ms. Allocated memory is still 111.1 MB. Free memory was 85.1 MB in the beginning and 75.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1269.24 ms. Allocated memory was 111.1 MB in the beginning and 155.2 MB in the end (delta: 44.0 MB). Free memory was 75.3 MB in the beginning and 105.2 MB in the end (delta: -29.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_9| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_9|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:55:57,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:56:00,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:56:00,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:56:00,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:56:00,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:56:00,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:56:00,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:56:00,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:56:00,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:56:00,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:56:00,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:56:00,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:56:00,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:56:00,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:56:00,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:56:00,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:56:00,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:56:00,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:56:00,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:56:00,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:56:00,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:56:00,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:56:00,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:56:00,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:56:00,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:56:00,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:56:00,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:56:00,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:56:00,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:56:00,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:56:00,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:56:00,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:56:00,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:56:00,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:56:00,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:56:00,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:56:00,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:56:00,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:56:00,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:56:00,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:56:00,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:56:00,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:56:00,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:56:00,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:56:00,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:56:00,167 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:56:00,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:56:00,168 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:56:00,168 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:56:00,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:56:00,168 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:56:00,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:56:00,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:56:00,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:56:00,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:56:00,170 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:56:00,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:56:00,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:56:00,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:56:00,171 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:56:00,171 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:56:00,171 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:56:00,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:56:00,171 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:56:00,171 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:56:00,172 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:56:00,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:56:00,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:56:00,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:56:00,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:56:00,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:56:00,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:56:00,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:56:00,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:56:00,175 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:56:00,175 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:56:00,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:56:00,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:56:00,177 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_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 053e01a2cec6b58c9d93ee902fbde2c977d3366f [2021-10-13 07:56:00,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:56:00,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:56:00,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:56:00,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:56:00,601 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:56:00,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero.c [2021-10-13 07:56:00,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data/fb99ae946/523f666534184dda8324729c132bd52f/FLAG58d5d8610 [2021-10-13 07:56:01,211 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:56:01,212 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/sv-benchmarks/c/ldv-memsafety/memsetNonZero.c [2021-10-13 07:56:01,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data/fb99ae946/523f666534184dda8324729c132bd52f/FLAG58d5d8610 [2021-10-13 07:56:01,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/data/fb99ae946/523f666534184dda8324729c132bd52f [2021-10-13 07:56:01,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:56:01,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:56:01,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:56:01,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:56:01,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:56:01,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f31f859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01, skipping insertion in model container [2021-10-13 07:56:01,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:56:01,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:56:01,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:56:01,811 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:56:01,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:56:01,854 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:56:01,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01 WrapperNode [2021-10-13 07:56:01,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:56:01,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:56:01,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:56:01,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:56:01,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:56:01,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:56:01,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:56:01,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:56:01,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:56:01,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:56:01,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:56:01,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:56:01,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (1/1) ... [2021-10-13 07:56:01,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:56:01,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:56:01,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:56:02,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:56:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:56:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:56:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:56:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:56:02,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:56:02,294 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 07:56:02,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:56:02 BoogieIcfgContainer [2021-10-13 07:56:02,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:56:02,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:56:02,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:56:02,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:56:02,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:56:01" (1/3) ... [2021-10-13 07:56:02,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2598883b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:56:02, skipping insertion in model container [2021-10-13 07:56:02,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:56:01" (2/3) ... [2021-10-13 07:56:02,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2598883b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:56:02, skipping insertion in model container [2021-10-13 07:56:02,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:56:02" (3/3) ... [2021-10-13 07:56:02,303 INFO L111 eAbstractionObserver]: Analyzing ICFG memsetNonZero.c [2021-10-13 07:56:02,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:56:02,309 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:56:02,401 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:56:02,412 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, mConcurrency=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 [2021-10-13 07:56:02,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:56:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-13 07:56:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:56:02,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:56:02,444 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:56:02,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:56:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:56:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2021-10-13 07:56:02,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:56:02,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711237469] [2021-10-13 07:56:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:02,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:56:02,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:56:02,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:56:02,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:56:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:02,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:56:02,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:02,665 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 [2021-10-13 07:56:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:02,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:02,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:56:02,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711237469] [2021-10-13 07:56:02,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711237469] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:56:02,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:56:02,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:56:02,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562420089] [2021-10-13 07:56:02,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:56:02,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:56:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:56:02,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:56:02,718 INFO L87 Difference]: Start difference. First operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 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) 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) [2021-10-13 07:56:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:56:02,756 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-13 07:56:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:56:02,758 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 [2021-10-13 07:56:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:56:02,765 INFO L225 Difference]: With dead ends: 11 [2021-10-13 07:56:02,766 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:56:02,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:56:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:56:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:56:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 07:56:02,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2021-10-13 07:56:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:56:02,794 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 07:56:02,794 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) [2021-10-13 07:56:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 07:56:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:56:02,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:56:02,795 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:56:02,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:56:03,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:56:03,009 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:56:03,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:56:03,010 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2021-10-13 07:56:03,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:56:03,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330340009] [2021-10-13 07:56:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:03,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:56:03,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:56:03,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:56:03,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:56:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:03,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:56:03,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:03,082 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 [2021-10-13 07:56:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:03,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:03,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:56:03,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330340009] [2021-10-13 07:56:03,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330340009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:56:03,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:56:03,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:56:03,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307596525] [2021-10-13 07:56:03,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:56:03,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:56:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:56:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:56:03,311 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:56:03,326 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-10-13 07:56:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:56:03,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:56:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:56:03,327 INFO L225 Difference]: With dead ends: 8 [2021-10-13 07:56:03,327 INFO L226 Difference]: Without dead ends: 8 [2021-10-13 07:56:03,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:56:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-13 07:56:03,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 07:56:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 07:56:03,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-10-13 07:56:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:56:03,331 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 07:56:03,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 07:56:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:56:03,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:56:03,332 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:56:03,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:56:03,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:56:03,544 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:56:03,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:56:03,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1803953449, now seen corresponding path program 1 times [2021-10-13 07:56:03,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:56:03,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424693050] [2021-10-13 07:56:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:03,546 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:56:03,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:56:03,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:56:03,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:56:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:03,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:56:03,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:03,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:03,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:56:03,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424693050] [2021-10-13 07:56:03,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424693050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:56:03,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:56:03,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:56:03,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371388681] [2021-10-13 07:56:03,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:56:03,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:56:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:56:03,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:56:03,755 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-13 07:56:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:56:03,786 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-13 07:56:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:56:03,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 7 [2021-10-13 07:56:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:56:03,788 INFO L225 Difference]: With dead ends: 10 [2021-10-13 07:56:03,788 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 07:56:03,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:56:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 07:56:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 07:56:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-10-13 07:56:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 07:56:03,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-13 07:56:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:56:03,792 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 07:56:03,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-13 07:56:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 07:56:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:56:03,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:56:03,794 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:56:03,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:56:04,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:56:04,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:56:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:56:04,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1569492695, now seen corresponding path program 1 times [2021-10-13 07:56:04,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:56:04,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131643148] [2021-10-13 07:56:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:04,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:56:04,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:56:04,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:56:04,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:56:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:04,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:56:04,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:04,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:04,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:56:04,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131643148] [2021-10-13 07:56:04,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131643148] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:56:04,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [646159147] [2021-10-13 07:56:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:04,326 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:56:04,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:56:04,330 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:56:04,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:56:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:04,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:56:04,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:04,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:04,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [646159147] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:56:04,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536444051] [2021-10-13 07:56:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:56:04,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:56:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:56:04,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:56:04,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:56:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:56:04,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:56:04,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:04,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:56:04,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536444051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:56:04,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:56:04,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-10-13 07:56:04,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599762421] [2021-10-13 07:56:04,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:56:04,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:56:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:56:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:56:04,744 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:56:04,910 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 07:56:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:56:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:56:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:56:04,911 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:56:04,911 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:56:04,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 203.0ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:56:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:56:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 07:56:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-13 07:56:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 07:56:04,915 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-10-13 07:56:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:56:04,915 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 07:56:04,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 07:56:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:56:04,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:56:04,916 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:56:04,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:56:05,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:56:05,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:56:05,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:56:05,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 07:56:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:56:05,526 INFO L82 PathProgramCache]: Analyzing trace with hash -89847511, now seen corresponding path program 2 times [2021-10-13 07:56:05,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:56:05,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569646256] [2021-10-13 07:56:05,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:56:05,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:56:05,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:56:05,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:56:05,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:56:05,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 07:56:05,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:56:05,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:56:05,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:56:05,636 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 [2021-10-13 07:56:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-13 07:56:05,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:56:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-13 07:56:05,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:56:05,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569646256] [2021-10-13 07:56:05,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569646256] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:56:05,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:56:05,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 07:56:05,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074437553] [2021-10-13 07:56:05,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:56:05,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:56:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:56:05,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:56:05,921 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:05,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:56:05,978 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-13 07:56:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:56:05,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:56:05,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:56:05,979 INFO L225 Difference]: With dead ends: 13 [2021-10-13 07:56:05,979 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:56:05,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:56:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:56:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:56:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-13 07:56:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:56:05,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-13 07:56:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:56:05,980 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:56:05,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:56:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:56:05,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:56:05,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:56:05,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:56:05,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:56:05,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:56:06,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:56:06,188 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:56:06,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:56:06 BoogieIcfgContainer [2021-10-13 07:56:06,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:56:06,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:56:06,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:56:06,191 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:56:06,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:56:02" (3/4) ... [2021-10-13 07:56:06,195 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:56:06,205 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-13 07:56:06,205 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 07:56:06,205 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:56:06,205 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:56:06,238 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:56:06,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:56:06,242 INFO L168 Benchmark]: Toolchain (without parser) took 4609.02 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 43.6 MB in the beginning and 31.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:56:06,246 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 65.0 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:56:06,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.80 ms. Allocated memory is still 65.0 MB. Free memory was 43.4 MB in the beginning and 34.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:56:06,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.72 ms. Allocated memory is still 65.0 MB. Free memory was 34.3 MB in the beginning and 47.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:56:06,248 INFO L168 Benchmark]: Boogie Preprocessor took 34.70 ms. Allocated memory is still 65.0 MB. Free memory was 47.4 MB in the beginning and 46.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:56:06,248 INFO L168 Benchmark]: RCFGBuilder took 346.88 ms. Allocated memory is still 65.0 MB. Free memory was 46.2 MB in the beginning and 37.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:56:06,249 INFO L168 Benchmark]: TraceAbstraction took 3893.35 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 37.3 MB in the beginning and 33.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:56:06,249 INFO L168 Benchmark]: Witness Printer took 47.26 ms. Allocated memory is still 90.2 MB. Free memory was 33.4 MB in the beginning and 31.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:56:06,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 65.0 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.80 ms. Allocated memory is still 65.0 MB. Free memory was 43.4 MB in the beginning and 34.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.72 ms. Allocated memory is still 65.0 MB. Free memory was 34.3 MB in the beginning and 47.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.70 ms. Allocated memory is still 65.0 MB. Free memory was 47.4 MB in the beginning and 46.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 346.88 ms. Allocated memory is still 65.0 MB. Free memory was 46.2 MB in the beginning and 37.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3893.35 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 37.3 MB in the beginning and 33.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * Witness Printer took 47.26 ms. Allocated memory is still 90.2 MB. Free memory was 33.4 MB in the beginning and 31.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3788.7ms, OverallIterations: 5, TraceHistogramMax: 6, EmptinessCheckTime: 20.4ms, AutomataDifference: 350.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 29 SDslu, 33 SDs, 0 SdLazy, 63 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 374.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=4, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.0ms SsaConstructionTime, 100.4ms SatisfiabilityAnalysisTime, 1341.2ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 1 QuantifiedInterpolants, 525 SizeOfPredicates, 11 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 42/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:56:06,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57e8cecd-bb65-4e09-bf2f-f970a17001f8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...