./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG --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 bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 ............................................................................................................................................. 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_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG --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 bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:57:35,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:57:35,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:57:35,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:57:35,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:57:35,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:57:35,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:57:35,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:57:35,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:57:35,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:57:35,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:57:35,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:57:35,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:57:35,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:57:35,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:57:35,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:57:35,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:57:35,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:57:35,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:57:35,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:57:35,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:57:35,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:57:35,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:57:35,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:57:35,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:57:35,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:57:35,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:57:35,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:57:35,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:57:35,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:57:35,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:57:35,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:57:35,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:57:35,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:57:35,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:57:35,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:57:35,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:57:35,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:57:35,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:57:35,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:57:35,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:57:35,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 04:57:35,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:57:35,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:57:35,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:57:35,476 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:57:35,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:57:35,476 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:57:35,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:57:35,477 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:57:35,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:57:35,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:57:35,479 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:57:35,480 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:57:35,480 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:57:35,480 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:57:35,481 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:57:35,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 04:57:35,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 04:57:35,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:57:35,483 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:57:35,483 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 04:57:35,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:57:35,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:57:35,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:57:35,484 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 04:57:35,484 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 04:57:35,485 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 04:57:35,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:57:35,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:57:35,487 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:57:35,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:57:35,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:57:35,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:57:35,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:35,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:57:35,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:57:35,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:57:35,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:57:35,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:57:35,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:57:35,491 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_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2021-10-29 04:57:35,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:57:35,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:57:35,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:57:35,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:57:35,862 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:57:35,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-29 04:57:35,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data/34209b034/8fa016f2ba4f40bdb0a597f3e7fc3811/FLAG2ee89b93a [2021-10-29 04:57:36,639 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:57:36,641 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-29 04:57:36,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data/34209b034/8fa016f2ba4f40bdb0a597f3e7fc3811/FLAG2ee89b93a [2021-10-29 04:57:36,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data/34209b034/8fa016f2ba4f40bdb0a597f3e7fc3811 [2021-10-29 04:57:36,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:57:36,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:57:36,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:36,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:57:36,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:57:36,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:36" (1/1) ... [2021-10-29 04:57:36,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7142b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:36, skipping insertion in model container [2021-10-29 04:57:36,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:36" (1/1) ... [2021-10-29 04:57:36,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:57:36,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:57:37,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:37,518 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-29 04:57:37,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6aa12220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:37, skipping insertion in model container [2021-10-29 04:57:37,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:37,519 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 04:57:37,522 INFO L168 Benchmark]: Toolchain (without parser) took 659.85 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 53.8 MB in the beginning and 87.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:37,523 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 61.8 MB in the beginning and 61.8 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:57:37,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.97 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 53.6 MB in the beginning and 87.0 MB in the end (delta: -33.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:37,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 61.8 MB in the beginning and 61.8 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 655.97 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 53.6 MB in the beginning and 87.0 MB in the end (delta: -33.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:57:40,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:57:40,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:57:40,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:57:40,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:57:40,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:57:40,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:57:40,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:57:40,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:57:40,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:57:40,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:57:40,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:57:40,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:57:40,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:57:40,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:57:40,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:57:40,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:57:40,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:57:40,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:57:40,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:57:40,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:57:40,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:57:40,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:57:40,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:57:40,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:57:40,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:57:40,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:57:40,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:57:40,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:57:40,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:57:40,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:57:40,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:57:40,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:57:40,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:57:40,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:57:40,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:57:40,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:57:40,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:57:40,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:57:40,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:57:40,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:57:40,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 04:57:40,357 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:57:40,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:57:40,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:57:40,360 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:57:40,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:57:40,360 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:57:40,361 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:57:40,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:57:40,361 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:57:40,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 04:57:40,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 04:57:40,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:57:40,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:57:40,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 04:57:40,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:57:40,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:57:40,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:57:40,366 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 04:57:40,367 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 04:57:40,367 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 04:57:40,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:57:40,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:57:40,368 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:57:40,368 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:57:40,368 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:57:40,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:57:40,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:57:40,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:57:40,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:57:40,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:40,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:57:40,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:57:40,371 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:57:40,371 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:57:40,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:57:40,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:57:40,372 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_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2021-10-29 04:57:40,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:57:40,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:57:40,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:57:40,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:57:40,828 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:57:40,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-29 04:57:40,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data/f6e9c6ccf/18038a1c1bbc4c879597d07f1f656432/FLAG80dd4f39c [2021-10-29 04:57:41,643 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:57:41,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-29 04:57:41,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data/f6e9c6ccf/18038a1c1bbc4c879597d07f1f656432/FLAG80dd4f39c [2021-10-29 04:57:41,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/data/f6e9c6ccf/18038a1c1bbc4c879597d07f1f656432 [2021-10-29 04:57:41,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:57:41,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:57:41,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:41,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:57:41,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:57:41,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:41" (1/1) ... [2021-10-29 04:57:41,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a5975b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:41, skipping insertion in model container [2021-10-29 04:57:41,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:41" (1/1) ... [2021-10-29 04:57:41,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:57:41,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:57:42,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:42,475 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 04:57:42,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:57:42,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:42,596 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:57:42,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:42,764 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:57:42,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42 WrapperNode [2021-10-29 04:57:42,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:42,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:57:42,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:57:42,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:57:42,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:57:42,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:57:42,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:57:42,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:57:42,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:57:42,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:57:42,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:57:42,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:57:42,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (1/1) ... [2021-10-29 04:57:42,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:42,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:42,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:57:42,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:57:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 04:57:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 04:57:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:57:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 04:57:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:57:42,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 04:57:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:57:42,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:57:43,445 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:57:43,451 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-29 04:57:43,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:43 BoogieIcfgContainer [2021-10-29 04:57:43,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:57:43,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:57:43,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:57:43,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:57:43,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:57:41" (1/3) ... [2021-10-29 04:57:43,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499e1144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:57:43, skipping insertion in model container [2021-10-29 04:57:43,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:42" (2/3) ... [2021-10-29 04:57:43,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499e1144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:57:43, skipping insertion in model container [2021-10-29 04:57:43,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:43" (3/3) ... [2021-10-29 04:57:43,468 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2021-10-29 04:57:43,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:57:43,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-29 04:57:43,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:57:43,539 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:57:43,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-29 04:57:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 36 states have internal predecessors, (41), 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) [2021-10-29 04:57:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:57:43,563 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:43,564 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:43,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:43,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 119409031, now seen corresponding path program 1 times [2021-10-29 04:57:43,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:43,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928458009] [2021-10-29 04:57:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:43,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:43,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:43,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:43,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:57:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:43,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:57:43,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:43,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:43,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:43,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928458009] [2021-10-29 04:57:43,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928458009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:43,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:43,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 04:57:43,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127759377] [2021-10-29 04:57:43,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:43,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:43,874 INFO L87 Difference]: Start difference. First operand has 37 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 36 states have internal predecessors, (41), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-29 04:57:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:44,000 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-10-29 04:57:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:57:44,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:57:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:44,013 INFO L225 Difference]: With dead ends: 71 [2021-10-29 04:57:44,014 INFO L226 Difference]: Without dead ends: 67 [2021-10-29 04:57:44,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:57:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-29 04:57:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2021-10-29 04:57:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 36 states have internal predecessors, (41), 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) [2021-10-29 04:57:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-29 04:57:44,048 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-10-29 04:57:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:44,048 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-29 04:57:44,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-29 04:57:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-10-29 04:57:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:57:44,049 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:44,050 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:44,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:44,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:44,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:44,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:44,264 INFO L85 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2021-10-29 04:57:44,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:44,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429151386] [2021-10-29 04:57:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:44,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:44,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:44,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:44,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:57:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:44,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:57:44,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:44,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:44,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:44,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429151386] [2021-10-29 04:57:44,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429151386] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:44,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:44,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 04:57:44,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904049578] [2021-10-29 04:57:44,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:44,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:44,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:44,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:44,521 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-29 04:57:44,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:44,568 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-10-29 04:57:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:57:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:57:44,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:44,571 INFO L225 Difference]: With dead ends: 36 [2021-10-29 04:57:44,571 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 04:57:44,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:57:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 04:57:44,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-29 04:57:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 35 states have internal predecessors, (40), 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) [2021-10-29 04:57:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-29 04:57:44,579 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-10-29 04:57:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:44,579 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-29 04:57:44,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-29 04:57:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-29 04:57:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:57:44,581 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:44,581 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:44,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 04:57:44,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:44,794 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 176667333, now seen corresponding path program 1 times [2021-10-29 04:57:44,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:44,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572981021] [2021-10-29 04:57:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:44,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:44,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:44,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:44,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:57:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:44,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:57:44,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:44,957 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-29 04:57:44,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-29 04:57:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:45,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:45,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:45,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572981021] [2021-10-29 04:57:45,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572981021] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:45,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:45,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-29 04:57:45,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513645892] [2021-10-29 04:57:45,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:57:45,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:57:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:57:45,116 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-10-29 04:57:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:45,177 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-10-29 04:57:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:57:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:57:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:45,179 INFO L225 Difference]: With dead ends: 49 [2021-10-29 04:57:45,179 INFO L226 Difference]: Without dead ends: 49 [2021-10-29 04:57:45,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:57:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-29 04:57:45,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2021-10-29 04:57:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 38 states have internal predecessors, (45), 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) [2021-10-29 04:57:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-10-29 04:57:45,185 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 8 [2021-10-29 04:57:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:45,185 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-10-29 04:57:45,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-10-29 04:57:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-10-29 04:57:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:57:45,196 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:45,197 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:45,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:45,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:45,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash 176667334, now seen corresponding path program 1 times [2021-10-29 04:57:45,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:45,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836136502] [2021-10-29 04:57:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:45,412 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:45,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:45,413 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:45,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 04:57:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:45,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:57:45,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:45,546 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-29 04:57:45,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-29 04:57:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:45,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:45,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:45,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836136502] [2021-10-29 04:57:45,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836136502] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:45,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:45,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-29 04:57:45,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117342318] [2021-10-29 04:57:45,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:45,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:45,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:45,860 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-29 04:57:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:45,985 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2021-10-29 04:57:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:57:45,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 8 [2021-10-29 04:57:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:45,989 INFO L225 Difference]: With dead ends: 70 [2021-10-29 04:57:45,989 INFO L226 Difference]: Without dead ends: 70 [2021-10-29 04:57:45,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-29 04:57:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2021-10-29 04:57:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 57 states have internal predecessors, (78), 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) [2021-10-29 04:57:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2021-10-29 04:57:46,009 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 8 [2021-10-29 04:57:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:46,009 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2021-10-29 04:57:46,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-29 04:57:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2021-10-29 04:57:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:57:46,012 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:46,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:46,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:46,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:46,227 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2021-10-29 04:57:46,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:46,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200755288] [2021-10-29 04:57:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:46,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:46,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:46,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:46,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 04:57:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:46,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 04:57:46,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:46,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:46,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:46,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200755288] [2021-10-29 04:57:46,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200755288] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:46,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:46,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 04:57:46,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989301322] [2021-10-29 04:57:46,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:57:46,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:46,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:57:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:57:46,494 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2021-10-29 04:57:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:46,625 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2021-10-29 04:57:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 04:57:46,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) Word has length 8 [2021-10-29 04:57:46,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:46,632 INFO L225 Difference]: With dead ends: 78 [2021-10-29 04:57:46,632 INFO L226 Difference]: Without dead ends: 78 [2021-10-29 04:57:46,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-29 04:57:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-29 04:57:46,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2021-10-29 04:57:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.6) internal successors, (80), 61 states have internal predecessors, (80), 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) [2021-10-29 04:57:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2021-10-29 04:57:46,651 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 8 [2021-10-29 04:57:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:46,653 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2021-10-29 04:57:46,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2021-10-29 04:57:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2021-10-29 04:57:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:57:46,654 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:46,655 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:46,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:46,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:46,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:46,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:46,869 INFO L85 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2021-10-29 04:57:46,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:46,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037232543] [2021-10-29 04:57:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:46,870 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:46,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:46,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:46,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 04:57:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:46,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:57:46,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:47,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:47,135 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:47,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037232543] [2021-10-29 04:57:47,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037232543] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:47,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:47,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-29 04:57:47,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256700868] [2021-10-29 04:57:47,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:57:47,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:57:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:57:47,136 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:47,269 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-10-29 04:57:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:57:47,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 04:57:47,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:47,271 INFO L225 Difference]: With dead ends: 72 [2021-10-29 04:57:47,271 INFO L226 Difference]: Without dead ends: 72 [2021-10-29 04:57:47,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:57:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-29 04:57:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2021-10-29 04:57:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.56) internal successors, (78), 60 states have internal predecessors, (78), 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) [2021-10-29 04:57:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2021-10-29 04:57:47,278 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 9 [2021-10-29 04:57:47,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:47,279 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2021-10-29 04:57:47,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2021-10-29 04:57:47,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:57:47,280 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:47,280 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:47,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:47,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:47,502 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:47,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:47,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1181720059, now seen corresponding path program 1 times [2021-10-29 04:57:47,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:47,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783076369] [2021-10-29 04:57:47,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:47,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:47,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:47,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:47,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 04:57:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:47,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:57:47,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:47,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:47,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:47,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783076369] [2021-10-29 04:57:47,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783076369] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:47,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:47,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:57:47,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317612019] [2021-10-29 04:57:47,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:57:47,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:57:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:57:47,712 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-10-29 04:57:47,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:47,794 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2021-10-29 04:57:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:57:47,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) Word has length 9 [2021-10-29 04:57:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:47,795 INFO L225 Difference]: With dead ends: 70 [2021-10-29 04:57:47,795 INFO L226 Difference]: Without dead ends: 66 [2021-10-29 04:57:47,796 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:57:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-29 04:57:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-10-29 04:57:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 57 states have internal predecessors, (72), 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) [2021-10-29 04:57:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2021-10-29 04:57:47,801 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 9 [2021-10-29 04:57:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:47,801 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2021-10-29 04:57:47,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-10-29 04:57:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2021-10-29 04:57:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:57:47,802 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:47,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:47,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:48,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:48,003 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2021-10-29 04:57:48,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:48,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804663174] [2021-10-29 04:57:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:48,004 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:48,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:48,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:48,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 04:57:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:48,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:57:48,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:48,116 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 [2021-10-29 04:57:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:48,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:48,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:48,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804663174] [2021-10-29 04:57:48,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804663174] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:48,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:48,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 04:57:48,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408905020] [2021-10-29 04:57:48,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:48,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:48,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:48,194 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2021-10-29 04:57:48,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:48,301 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-10-29 04:57:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:57:48,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) Word has length 10 [2021-10-29 04:57:48,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:48,303 INFO L225 Difference]: With dead ends: 68 [2021-10-29 04:57:48,303 INFO L226 Difference]: Without dead ends: 68 [2021-10-29 04:57:48,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:57:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-29 04:57:48,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2021-10-29 04:57:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 57 states have internal predecessors, (71), 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) [2021-10-29 04:57:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2021-10-29 04:57:48,309 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 10 [2021-10-29 04:57:48,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:48,309 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2021-10-29 04:57:48,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2021-10-29 04:57:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2021-10-29 04:57:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:57:48,310 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:48,310 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:48,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:48,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:48,511 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:48,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2021-10-29 04:57:48,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:48,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462686381] [2021-10-29 04:57:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:48,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:48,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:48,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:48,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 04:57:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:48,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:57:48,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:48,677 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-29 04:57:48,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-29 04:57:48,772 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 04:57:48,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-10-29 04:57:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:48,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:48,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:48,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462686381] [2021-10-29 04:57:48,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462686381] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:48,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:48,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:57:48,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304186413] [2021-10-29 04:57:48,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:48,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:48,896 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-29 04:57:48,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:48,978 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2021-10-29 04:57:48,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:57:48,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) Word has length 10 [2021-10-29 04:57:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:48,980 INFO L225 Difference]: With dead ends: 60 [2021-10-29 04:57:48,980 INFO L226 Difference]: Without dead ends: 60 [2021-10-29 04:57:48,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:57:48,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-29 04:57:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-10-29 04:57:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 56 states have internal predecessors, (69), 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) [2021-10-29 04:57:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-10-29 04:57:48,984 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 10 [2021-10-29 04:57:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:48,985 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-10-29 04:57:48,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-29 04:57:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-10-29 04:57:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:57:48,985 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:48,986 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:49,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:49,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:49,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2021-10-29 04:57:49,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:49,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50872822] [2021-10-29 04:57:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:49,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:49,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:49,200 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:49,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 04:57:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:49,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:57:49,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:49,342 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-29 04:57:49,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-29 04:57:49,428 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 04:57:49,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-29 04:57:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:49,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:49,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:49,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50872822] [2021-10-29 04:57:49,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50872822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:49,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:49,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-29 04:57:49,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433797222] [2021-10-29 04:57:49,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:57:49,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:57:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:57:49,948 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:50,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:50,021 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-10-29 04:57:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:57:50,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:57:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:50,023 INFO L225 Difference]: With dead ends: 55 [2021-10-29 04:57:50,023 INFO L226 Difference]: Without dead ends: 55 [2021-10-29 04:57:50,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 04:57:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-29 04:57:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2021-10-29 04:57:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.3) internal successors, (52), 47 states have internal predecessors, (52), 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) [2021-10-29 04:57:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-10-29 04:57:50,026 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2021-10-29 04:57:50,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:50,027 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-10-29 04:57:50,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-10-29 04:57:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:57:50,028 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:50,028 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:50,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:50,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:50,237 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:50,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:50,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1988338696, now seen corresponding path program 1 times [2021-10-29 04:57:50,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:50,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61241986] [2021-10-29 04:57:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:50,238 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:50,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:50,239 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:50,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 04:57:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:50,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:57:50,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:50,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:50,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:50,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61241986] [2021-10-29 04:57:50,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61241986] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:50,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:50,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 04:57:50,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974054790] [2021-10-29 04:57:50,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:50,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:50,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:50,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:50,472 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-29 04:57:50,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:50,507 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-10-29 04:57:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:57:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Word has length 10 [2021-10-29 04:57:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:50,509 INFO L225 Difference]: With dead ends: 36 [2021-10-29 04:57:50,509 INFO L226 Difference]: Without dead ends: 34 [2021-10-29 04:57:50,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:57:50,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-29 04:57:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-29 04:57:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 33 states have internal predecessors, (36), 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) [2021-10-29 04:57:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-10-29 04:57:50,511 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 10 [2021-10-29 04:57:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:50,512 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-10-29 04:57:50,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-29 04:57:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-10-29 04:57:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:57:50,512 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:50,513 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:50,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:50,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:57:50,723 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:57:50,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:50,723 INFO L85 PathProgramCache]: Analyzing trace with hash 889860305, now seen corresponding path program 1 times [2021-10-29 04:57:50,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:57:50,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044432380] [2021-10-29 04:57:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:50,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:57:50,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:57:50,725 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:57:50,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 04:57:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:50,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:57:50,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:50,918 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-29 04:57:50,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-29 04:57:51,012 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:57:51,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-29 04:57:51,229 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-29 04:57:51,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-10-29 04:57:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:51,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:55,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:57:55,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044432380] [2021-10-29 04:57:55,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044432380] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:55,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:55,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2021-10-29 04:57:55,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569013150] [2021-10-29 04:57:55,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:57:55,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:57:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:57:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=34, Unknown=2, NotChecked=0, Total=56 [2021-10-29 04:57:55,436 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-10-29 04:58:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:58:07,672 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-10-29 04:58:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:58:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 [2021-10-29 04:58:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:58:07,673 INFO L225 Difference]: With dead ends: 39 [2021-10-29 04:58:07,673 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 04:58:07,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=43, Invalid=65, Unknown=2, NotChecked=0, Total=110 [2021-10-29 04:58:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 04:58:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-10-29 04:58:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.36) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:58:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-10-29 04:58:07,676 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2021-10-29 04:58:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:58:07,677 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-10-29 04:58:07,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-10-29 04:58:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-10-29 04:58:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:58:07,678 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:58:07,678 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:58:07,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:07,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:58:07,891 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-10-29 04:58:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:58:07,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1983734109, now seen corresponding path program 1 times [2021-10-29 04:58:07,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:58:07,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236423221] [2021-10-29 04:58:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:58:07,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:58:07,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:58:07,893 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:58:07,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 04:58:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:58:08,065 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:58:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:58:08,125 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 04:58:08,130 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:58:08,131 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 04:58:08,133 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 04:58:08,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 04:58:08,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 04:58:08,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 04:58:08,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 04:58:08,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 04:58:08,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 04:58:08,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 04:58:08,135 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 04:58:08,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 04:58:08,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-29 04:58:08,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-29 04:58:08,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 04:58:08,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:58:08,352 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:58:08,356 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:58:08,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:58:08 BoogieIcfgContainer [2021-10-29 04:58:08,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:58:08,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:58:08,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:58:08,407 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:58:08,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:43" (3/4) ... [2021-10-29 04:58:08,413 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 04:58:08,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:58:08,414 INFO L168 Benchmark]: Toolchain (without parser) took 26550.81 ms. Allocated memory was 62.9 MB in the beginning and 98.6 MB in the end (delta: 35.7 MB). Free memory was 41.4 MB in the beginning and 41.5 MB in the end (delta: -169.2 kB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:08,415 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:58:08,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 893.80 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 27.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:08,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.98 ms. Allocated memory is still 62.9 MB. Free memory was 27.6 MB in the beginning and 25.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:08,417 INFO L168 Benchmark]: Boogie Preprocessor took 30.08 ms. Allocated memory is still 62.9 MB. Free memory was 25.3 MB in the beginning and 23.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:08,418 INFO L168 Benchmark]: RCFGBuilder took 592.88 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 23.7 MB in the beginning and 54.0 MB in the end (delta: -30.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:08,418 INFO L168 Benchmark]: TraceAbstraction took 24948.87 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 53.2 MB in the beginning and 41.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:58:08,419 INFO L168 Benchmark]: Witness Printer took 7.11 ms. Allocated memory is still 98.6 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:58:08,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 893.80 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 27.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.98 ms. Allocated memory is still 62.9 MB. Free memory was 27.6 MB in the beginning and 25.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.08 ms. Allocated memory is still 62.9 MB. Free memory was 25.3 MB in the beginning and 23.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 592.88 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 23.7 MB in the beginning and 54.0 MB in the end (delta: -30.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24948.87 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 53.2 MB in the beginning and 41.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.11 ms. Allocated memory is still 98.6 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L764] int ret = - -3; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L758] return __VERIFIER_nondet_int(); [L768] ret = f6() [L769] COND FALSE !(ret<0) [L761] return __VERIFIER_nondet_int(); [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L789] a6.p = 0 VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 24.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 742 SDslu, 456 SDs, 0 SdLazy, 303 SolverSat, 26 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 156 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 114 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 198 ConstructedInterpolants, 5 QuantifiedInterpolants, 1371 SizeOfPredicates, 25 NumberOfNonLiveVariables, 535 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 04:58:08,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f205bb7c-7ef6-492c-ae54-bbc67096be77/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...