./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-1_2-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur --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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:10:36,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:10:36,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:10:36,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:10:36,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:10:36,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:10:36,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:10:36,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:10:36,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:10:36,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:10:36,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:10:36,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:10:36,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:10:36,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:10:36,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:10:36,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:10:36,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:10:36,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:10:36,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:10:36,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:10:36,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:10:36,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:10:36,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:10:36,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:10:36,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:10:36,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:10:36,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:10:36,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:10:36,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:10:36,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:10:36,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:10:36,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:10:36,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:10:36,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:10:36,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:10:36,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:10:36,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:10:36,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:10:36,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:10:36,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:10:36,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:10:36,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 01:10:36,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:10:36,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:10:36,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:10:36,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:10:36,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:10:36,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:10:36,596 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:10:36,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:10:36,597 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:10:36,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:10:36,599 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:10:36,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:10:36,599 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:10:36,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:10:36,600 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:10:36,600 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:10:36,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:10:36,601 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:10:36,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 01:10:36,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 01:10:36,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:10:36,602 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:10:36,602 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:10:36,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:10:36,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:10:36,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:10:36,603 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 01:10:36,604 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 01:10:36,604 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 01:10:36,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:10:36,605 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:10:36,605 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:10:36,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:10:36,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:10:36,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:10:36,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:10:36,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:10:36,606 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:10:36,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:10:36,607 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:10:36,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:10:36,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:10:36,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2022-11-26 01:10:36,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:10:36,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:10:36,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:10:36,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:10:36,979 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:10:36,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-11-26 01:10:40,444 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:10:40,809 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:10:40,810 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-11-26 01:10:40,834 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/data/63ecd28f4/110ad5db07b24a87b5b4d6e0cbc77da6/FLAG6b0bd51aa [2022-11-26 01:10:40,852 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/data/63ecd28f4/110ad5db07b24a87b5b4d6e0cbc77da6 [2022-11-26 01:10:40,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:10:40,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:10:40,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:10:40,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:10:40,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:10:40,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:10:40" (1/1) ... [2022-11-26 01:10:40,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3997023a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:40, skipping insertion in model container [2022-11-26 01:10:40,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:10:40" (1/1) ... [2022-11-26 01:10:40,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:10:40,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:10:41,885 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-11-26 01:10:41,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:10:41,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:10:41,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:10:41,915 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:10:41,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:10:41,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:10:41,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:10:41,940 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:10:41,990 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-11-26 01:10:41,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:10:41,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:10:41,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:10:41,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:10:41,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:10:41,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:10:42,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:10:42,137 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:10:42,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42 WrapperNode [2022-11-26 01:10:42,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:10:42,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:10:42,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:10:42,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:10:42,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,260 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-11-26 01:10:42,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:10:42,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:10:42,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:10:42,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:10:42,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:10:42,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:10:42,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:10:42,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:10:42,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (1/1) ... [2022-11-26 01:10:42,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:10:42,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:10:42,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:10:42,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:10:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 01:10:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:10:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 01:10:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 01:10:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-26 01:10:42,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:10:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 01:10:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:10:42,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:10:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:10:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 01:10:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 01:10:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 01:10:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:10:42,465 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 01:10:42,976 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:10:42,978 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:10:43,187 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:10:43,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:10:43,231 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:10:43,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:10:43 BoogieIcfgContainer [2022-11-26 01:10:43,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:10:43,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:10:43,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:10:43,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:10:43,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:10:40" (1/3) ... [2022-11-26 01:10:43,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6891a0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:10:43, skipping insertion in model container [2022-11-26 01:10:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:42" (2/3) ... [2022-11-26 01:10:43,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6891a0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:10:43, skipping insertion in model container [2022-11-26 01:10:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:10:43" (3/3) ... [2022-11-26 01:10:43,247 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-11-26 01:10:43,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:10:43,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-26 01:10:43,272 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 01:10:43,331 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-26 01:10:43,411 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:10:43,429 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 116 transitions, 240 flow [2022-11-26 01:10:43,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 116 transitions, 240 flow [2022-11-26 01:10:43,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 116 transitions, 240 flow [2022-11-26 01:10:43,543 INFO L130 PetriNetUnfolder]: 4/135 cut-off events. [2022-11-26 01:10:43,543 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-26 01:10:43,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 4/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2022-11-26 01:10:43,549 INFO L119 LiptonReduction]: Number of co-enabled transitions 364 [2022-11-26 01:10:50,613 INFO L134 LiptonReduction]: Checked pairs total: 444 [2022-11-26 01:10:50,613 INFO L136 LiptonReduction]: Total number of compositions: 140 [2022-11-26 01:10:50,622 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 54 flow [2022-11-26 01:10:50,635 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 36 states, 20 states have (on average 2.25) internal successors, (45), 35 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) [2022-11-26 01:10:50,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:10:50,663 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18379b8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:10:50,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-26 01:10:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 20 states have (on average 2.25) internal successors, (45), 35 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) [2022-11-26 01:10:50,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-26 01:10:50,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:50,672 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-26 01:10:50,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:10:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:50,678 INFO L85 PathProgramCache]: Analyzing trace with hash 463, now seen corresponding path program 1 times [2022-11-26 01:10:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717523077] [2022-11-26 01:10:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:50,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:50,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717523077] [2022-11-26 01:10:50,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717523077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:10:50,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:10:50,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-26 01:10:50,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507605375] [2022-11-26 01:10:50,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:10:50,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 01:10:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:50,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 01:10:50,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 01:10:50,961 INFO L87 Difference]: Start difference. First operand has 36 states, 20 states have (on average 2.25) internal successors, (45), 35 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-26 01:10:51,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:51,016 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-26 01:10:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 01:10:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-26 01:10:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:51,030 INFO L225 Difference]: With dead ends: 31 [2022-11-26 01:10:51,030 INFO L226 Difference]: Without dead ends: 28 [2022-11-26 01:10:51,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 01:10:51,040 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:51,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:10:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-26 01:10:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-26 01:10:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.894736842105263) internal successors, (36), 27 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) [2022-11-26 01:10:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-11-26 01:10:51,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 1 [2022-11-26 01:10:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:51,091 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-11-26 01:10:51,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-26 01:10:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-11-26 01:10:51,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 01:10:51,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:51,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 01:10:51,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:10:51,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:10:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 14655, now seen corresponding path program 1 times [2022-11-26 01:10:51,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:51,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550273347] [2022-11-26 01:10:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:51,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:51,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550273347] [2022-11-26 01:10:51,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550273347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:10:51,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:10:51,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:10:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897022591] [2022-11-26 01:10:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:10:51,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:10:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:10:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:51,387 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:51,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:51,436 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2022-11-26 01:10:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:10:51,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-26 01:10:51,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:51,439 INFO L225 Difference]: With dead ends: 26 [2022-11-26 01:10:51,439 INFO L226 Difference]: Without dead ends: 26 [2022-11-26 01:10:51,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:51,442 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:51,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:10:51,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-26 01:10:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-26 01:10:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 25 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) [2022-11-26 01:10:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-26 01:10:51,454 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 2 [2022-11-26 01:10:51,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:51,455 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-26 01:10:51,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-26 01:10:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 01:10:51,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:51,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 01:10:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:10:51,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:10:51,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash 454082, now seen corresponding path program 1 times [2022-11-26 01:10:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:51,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590294312] [2022-11-26 01:10:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:51,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:51,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590294312] [2022-11-26 01:10:51,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590294312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:10:51,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:10:51,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:10:51,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078635777] [2022-11-26 01:10:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:10:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:10:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:10:51,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:51,576 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:51,616 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-26 01:10:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:10:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 01:10:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:51,617 INFO L225 Difference]: With dead ends: 25 [2022-11-26 01:10:51,618 INFO L226 Difference]: Without dead ends: 21 [2022-11-26 01:10:51,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:51,619 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:51,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:10:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-26 01:10:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-26 01:10:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 20 states have internal predecessors, (26), 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) [2022-11-26 01:10:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-26 01:10:51,625 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 3 [2022-11-26 01:10:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:51,625 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-26 01:10:51,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-26 01:10:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:10:51,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:51,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:10:51,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:10:51,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:10:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash 14025028, now seen corresponding path program 1 times [2022-11-26 01:10:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:51,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395192887] [2022-11-26 01:10:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:51,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:51,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395192887] [2022-11-26 01:10:51,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395192887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:10:51,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:10:51,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:10:51,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107192851] [2022-11-26 01:10:51,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:10:51,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:10:51,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:51,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:10:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:51,738 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-26 01:10:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:51,771 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-26 01:10:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:10:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:10:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:51,772 INFO L225 Difference]: With dead ends: 28 [2022-11-26 01:10:51,773 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 01:10:51,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:51,774 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:51,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:10:51,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 01:10:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2022-11-26 01:10:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 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) [2022-11-26 01:10:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-26 01:10:51,779 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2022-11-26 01:10:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:51,779 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-26 01:10:51,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-26 01:10:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-26 01:10:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:10:51,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:51,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:10:51,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 01:10:51,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:10:51,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash 14026035, now seen corresponding path program 1 times [2022-11-26 01:10:51,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:51,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628774077] [2022-11-26 01:10:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:51,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:52,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:52,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628774077] [2022-11-26 01:10:52,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628774077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:10:52,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:10:52,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:10:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859142337] [2022-11-26 01:10:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:10:52,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:10:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:10:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:52,017 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:10:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:52,051 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-11-26 01:10:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:10:52,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:10:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:52,053 INFO L225 Difference]: With dead ends: 18 [2022-11-26 01:10:52,053 INFO L226 Difference]: Without dead ends: 18 [2022-11-26 01:10:52,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:52,057 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:52,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:10:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-26 01:10:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-26 01:10:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 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) [2022-11-26 01:10:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-11-26 01:10:52,063 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2022-11-26 01:10:52,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:52,063 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-11-26 01:10:52,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:10:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-11-26 01:10:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:10:52,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:52,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:10:52,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 01:10:52,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:10:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash 14026036, now seen corresponding path program 1 times [2022-11-26 01:10:52,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:52,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288831136] [2022-11-26 01:10:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:52,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:52,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:52,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288831136] [2022-11-26 01:10:52,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288831136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:10:52,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:10:52,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:10:52,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656991343] [2022-11-26 01:10:52,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:10:52,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:10:52,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:10:52,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:10:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:52,242 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:10:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:52,265 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-11-26 01:10:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:10:52,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:10:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:52,267 INFO L225 Difference]: With dead ends: 16 [2022-11-26 01:10:52,267 INFO L226 Difference]: Without dead ends: 16 [2022-11-26 01:10:52,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:10:52,268 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:52,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:10:52,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-26 01:10:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-26 01:10:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-11-26 01:10:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-26 01:10:52,271 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2022-11-26 01:10:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:52,272 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-26 01:10:52,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:10:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-26 01:10:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:10:52,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:52,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:10:52,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 01:10:52,273 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:10:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash 434782944, now seen corresponding path program 1 times [2022-11-26 01:10:52,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:52,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459270906] [2022-11-26 01:10:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:52,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:10:52,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:10:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:10:52,341 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:10:52,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:10:52,343 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-26 01:10:52,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2022-11-26 01:10:52,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-26 01:10:52,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-26 01:10:52,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2022-11-26 01:10:52,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2022-11-26 01:10:52,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-26 01:10:52,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-26 01:10:52,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-26 01:10:52,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-11-26 01:10:52,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-11-26 01:10:52,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-26 01:10:52,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 01:10:52,351 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:10:52,357 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-26 01:10:52,357 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:10:52,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:10:52 BasicIcfg [2022-11-26 01:10:52,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:10:52,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:10:52,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:10:52,381 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:10:52,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:10:43" (3/4) ... [2022-11-26 01:10:52,385 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:10:52,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:10:52,386 INFO L158 Benchmark]: Toolchain (without parser) took 11529.62ms. Allocated memory was 151.0MB in the beginning and 245.4MB in the end (delta: 94.4MB). Free memory was 106.4MB in the beginning and 175.2MB in the end (delta: -68.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2022-11-26 01:10:52,387 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:10:52,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1281.26ms. Allocated memory is still 151.0MB. Free memory was 105.7MB in the beginning and 74.6MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-26 01:10:52,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.52ms. Allocated memory is still 151.0MB. Free memory was 74.6MB in the beginning and 71.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:10:52,388 INFO L158 Benchmark]: Boogie Preprocessor took 66.08ms. Allocated memory is still 151.0MB. Free memory was 71.1MB in the beginning and 69.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:10:52,388 INFO L158 Benchmark]: RCFGBuilder took 905.74ms. Allocated memory is still 151.0MB. Free memory was 69.0MB in the beginning and 47.4MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-26 01:10:52,389 INFO L158 Benchmark]: TraceAbstraction took 9141.74ms. Allocated memory was 151.0MB in the beginning and 245.4MB in the end (delta: 94.4MB). Free memory was 46.7MB in the beginning and 176.2MB in the end (delta: -129.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:10:52,389 INFO L158 Benchmark]: Witness Printer took 5.19ms. Allocated memory is still 245.4MB. Free memory was 176.2MB in the beginning and 175.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:10:52,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1281.26ms. Allocated memory is still 151.0MB. Free memory was 105.7MB in the beginning and 74.6MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.52ms. Allocated memory is still 151.0MB. Free memory was 74.6MB in the beginning and 71.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.08ms. Allocated memory is still 151.0MB. Free memory was 71.1MB in the beginning and 69.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 905.74ms. Allocated memory is still 151.0MB. Free memory was 69.0MB in the beginning and 47.4MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9141.74ms. Allocated memory was 151.0MB in the beginning and 245.4MB in the end (delta: 94.4MB). Free memory was 46.7MB in the beginning and 176.2MB in the end (delta: -129.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.19ms. Allocated memory is still 245.4MB. Free memory was 176.2MB in the beginning and 175.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 115 PlacesBefore, 25 PlacesAfterwards, 116 TransitionsBefore, 23 TransitionsAfterwards, 364 CoEnabledTransitionPairs, 7 FixpointIterations, 91 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 140 TotalNumberOfCompositions, 444 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 374, independent: 350, independent conditional: 0, independent unconditional: 350, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 246, independent: 235, independent conditional: 0, independent unconditional: 235, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 246, independent: 234, independent conditional: 0, independent unconditional: 234, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 67, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 374, independent: 115, independent conditional: 0, independent unconditional: 115, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 246, unknown conditional: 0, unknown unconditional: 246] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1695. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=5, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 121 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 8.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 16 mSDtfsCounter, 105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 [2022-11-26 01:10:52,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur --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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:10:55,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:10:55,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:10:55,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:10:55,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:10:55,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:10:55,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:10:55,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:10:55,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:10:55,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:10:55,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:10:55,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:10:55,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:10:55,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:10:55,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:10:55,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:10:55,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:10:55,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:10:55,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:10:55,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:10:55,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:10:55,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:10:55,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:10:55,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:10:55,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:10:55,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:10:55,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:10:55,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:10:55,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:10:55,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:10:55,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:10:55,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:10:55,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:10:55,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:10:55,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:10:55,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:10:55,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:10:55,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:10:55,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:10:55,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:10:55,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:10:55,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-26 01:10:55,482 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:10:55,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:10:55,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:10:55,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:10:55,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:10:55,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:10:55,486 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:10:55,486 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:10:55,487 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:10:55,487 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:10:55,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:10:55,489 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:10:55,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 01:10:55,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 01:10:55,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:10:55,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:10:55,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:10:55,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:10:55,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:10:55,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:10:55,492 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 01:10:55,492 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 01:10:55,493 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 01:10:55,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:10:55,493 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:10:55,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 01:10:55,494 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 01:10:55,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:10:55,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:10:55,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:10:55,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 01:10:55,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:10:55,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:10:55,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:10:55,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:10:55,497 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 01:10:55,497 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 01:10:55,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:10:55,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 01:10:55,498 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_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2022-11-26 01:10:55,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:10:55,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:10:55,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:10:55,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:10:55,959 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:10:55,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-11-26 01:10:59,433 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:10:59,778 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:10:59,788 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-11-26 01:10:59,821 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/data/3778479ac/f038ae6b7b494f1195363737b1edb9dd/FLAGa4dcaff29 [2022-11-26 01:10:59,844 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/data/3778479ac/f038ae6b7b494f1195363737b1edb9dd [2022-11-26 01:10:59,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:10:59,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:10:59,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:10:59,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:10:59,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:10:59,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:10:59" (1/1) ... [2022-11-26 01:10:59,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dc05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:10:59, skipping insertion in model container [2022-11-26 01:10:59,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:10:59" (1/1) ... [2022-11-26 01:10:59,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:10:59,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:11:01,106 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-11-26 01:11:01,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:11:01,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:11:01,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:11:01,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:11:01,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:11:01,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:11:01,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:11:01,187 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:11:01,289 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-11-26 01:11:01,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:11:01,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:11:01,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:11:01,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:11:01,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 01:11:01,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 01:11:01,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:11:01,454 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:11:01,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01 WrapperNode [2022-11-26 01:11:01,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:11:01,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:11:01,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:11:01,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:11:01,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,533 INFO L138 Inliner]: procedures = 486, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2022-11-26 01:11:01,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:11:01,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:11:01,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:11:01,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:11:01,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,575 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:11:01,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:11:01,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:11:01,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:11:01,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (1/1) ... [2022-11-26 01:11:01,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:11:01,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:11:01,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:11:01,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:11:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 01:11:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:11:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 01:11:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-26 01:11:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 01:11:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-26 01:11:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:11:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 01:11:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:11:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:11:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-26 01:11:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:11:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-26 01:11:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 01:11:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 01:11:01,688 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 01:11:02,184 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:11:02,187 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:11:02,491 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:11:02,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:11:02,550 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:11:02,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:11:02 BoogieIcfgContainer [2022-11-26 01:11:02,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:11:02,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:11:02,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:11:02,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:11:02,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:10:59" (1/3) ... [2022-11-26 01:11:02,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c42641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:11:02, skipping insertion in model container [2022-11-26 01:11:02,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:11:01" (2/3) ... [2022-11-26 01:11:02,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c42641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:11:02, skipping insertion in model container [2022-11-26 01:11:02,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:11:02" (3/3) ... [2022-11-26 01:11:02,570 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-11-26 01:11:02,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:11:02,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-26 01:11:02,595 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 01:11:02,693 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-26 01:11:02,755 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:11:02,786 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 115 transitions, 238 flow [2022-11-26 01:11:02,792 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 115 transitions, 238 flow [2022-11-26 01:11:02,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 115 transitions, 238 flow [2022-11-26 01:11:02,897 INFO L130 PetriNetUnfolder]: 4/133 cut-off events. [2022-11-26 01:11:02,898 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-26 01:11:02,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 133 events. 4/133 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2022-11-26 01:11:02,906 INFO L119 LiptonReduction]: Number of co-enabled transitions 350 [2022-11-26 01:11:21,183 INFO L134 LiptonReduction]: Checked pairs total: 433 [2022-11-26 01:11:21,184 INFO L136 LiptonReduction]: Total number of compositions: 137 [2022-11-26 01:11:21,193 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 54 flow [2022-11-26 01:11:21,207 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 36 states, 20 states have (on average 2.25) internal successors, (45), 35 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) [2022-11-26 01:11:21,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:11:21,236 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d50e9e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:11:21,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-26 01:11:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 20 states have (on average 2.25) internal successors, (45), 35 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) [2022-11-26 01:11:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-26 01:11:21,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:21,246 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-26 01:11:21,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:11:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash 450, now seen corresponding path program 1 times [2022-11-26 01:11:21,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:11:21,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251899317] [2022-11-26 01:11:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:21,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:21,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:11:21,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:11:21,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 01:11:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:21,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-26 01:11:21,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:21,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:11:21,498 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:11:21,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251899317] [2022-11-26 01:11:21,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251899317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:21,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:21,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-26 01:11:21,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785998888] [2022-11-26 01:11:21,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:21,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 01:11:21,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:11:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 01:11:21,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 01:11:21,532 INFO L87 Difference]: Start difference. First operand has 36 states, 20 states have (on average 2.25) internal successors, (45), 35 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-26 01:11:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:21,626 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-26 01:11:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 01:11:21,630 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-26 01:11:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:21,637 INFO L225 Difference]: With dead ends: 31 [2022-11-26 01:11:21,638 INFO L226 Difference]: Without dead ends: 28 [2022-11-26 01:11:21,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 01:11:21,642 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:21,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-26 01:11:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-26 01:11:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.894736842105263) internal successors, (36), 27 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) [2022-11-26 01:11:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-11-26 01:11:21,721 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 1 [2022-11-26 01:11:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:21,721 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-11-26 01:11:21,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-26 01:11:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-11-26 01:11:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-26 01:11:21,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:21,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-26 01:11:21,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-26 01:11:21,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:21,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:11:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash 14524, now seen corresponding path program 1 times [2022-11-26 01:11:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:11:21,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643553659] [2022-11-26 01:11:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:21,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:21,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:11:21,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:11:21,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 01:11:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:22,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:11:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:22,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:11:22,188 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:11:22,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643553659] [2022-11-26 01:11:22,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643553659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:22,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:22,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131266054] [2022-11-26 01:11:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:22,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:11:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:22,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:22,195 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:11:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:22,299 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2022-11-26 01:11:22,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:22,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-26 01:11:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:22,303 INFO L225 Difference]: With dead ends: 26 [2022-11-26 01:11:22,303 INFO L226 Difference]: Without dead ends: 26 [2022-11-26 01:11:22,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:22,305 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:22,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-26 01:11:22,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-26 01:11:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 25 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) [2022-11-26 01:11:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-26 01:11:22,312 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 2 [2022-11-26 01:11:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:22,312 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-26 01:11:22,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:11:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-26 01:11:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 01:11:22,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:22,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 01:11:22,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 01:11:22,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:22,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:11:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:22,531 INFO L85 PathProgramCache]: Analyzing trace with hash 450050, now seen corresponding path program 1 times [2022-11-26 01:11:22,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:11:22,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680067387] [2022-11-26 01:11:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:22,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:22,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:11:22,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:11:22,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-26 01:11:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:22,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 01:11:22,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:22,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:11:22,697 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:11:22,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680067387] [2022-11-26 01:11:22,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680067387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:22,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:22,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:22,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854592321] [2022-11-26 01:11:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:22,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:22,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:11:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:22,701 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:11:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:22,781 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-26 01:11:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:22,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 01:11:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:22,783 INFO L225 Difference]: With dead ends: 25 [2022-11-26 01:11:22,783 INFO L226 Difference]: Without dead ends: 21 [2022-11-26 01:11:22,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:22,785 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:22,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-26 01:11:22,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-26 01:11:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 20 states have internal predecessors, (26), 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) [2022-11-26 01:11:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-26 01:11:22,790 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 3 [2022-11-26 01:11:22,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:22,791 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-26 01:11:22,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:11:22,791 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-26 01:11:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:11:22,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:22,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:11:22,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-26 01:11:22,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:22,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:11:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash 13815507, now seen corresponding path program 1 times [2022-11-26 01:11:22,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:11:22,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903869656] [2022-11-26 01:11:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:22,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:22,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:11:22,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:11:22,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-26 01:11:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:23,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 01:11:23,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:23,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:11:23,228 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:11:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903869656] [2022-11-26 01:11:23,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903869656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:23,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:23,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:23,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964172271] [2022-11-26 01:11:23,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:23,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:23,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:11:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:23,238 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:11:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:23,303 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-11-26 01:11:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:23,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:11:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:23,304 INFO L225 Difference]: With dead ends: 19 [2022-11-26 01:11:23,304 INFO L226 Difference]: Without dead ends: 19 [2022-11-26 01:11:23,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:23,306 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:23,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-26 01:11:23,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-26 01:11:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-11-26 01:11:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-26 01:11:23,311 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 4 [2022-11-26 01:11:23,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:23,312 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-26 01:11:23,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:11:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-26 01:11:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:11:23,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:23,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:11:23,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-26 01:11:23,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:23,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:11:23,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:23,524 INFO L85 PathProgramCache]: Analyzing trace with hash 13815508, now seen corresponding path program 1 times [2022-11-26 01:11:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:11:23,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895183354] [2022-11-26 01:11:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:23,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:11:23,527 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:11:23,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 01:11:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:23,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 01:11:23,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:23,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:11:23,910 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:11:23,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895183354] [2022-11-26 01:11:23,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895183354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:23,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:23,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:11:23,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50199530] [2022-11-26 01:11:23,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:23,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:11:23,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:23,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:23,912 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:11:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:24,005 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2022-11-26 01:11:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:24,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:11:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:24,007 INFO L225 Difference]: With dead ends: 17 [2022-11-26 01:11:24,007 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 01:11:24,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:24,008 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:24,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 01:11:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-26 01:11:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 16 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) [2022-11-26 01:11:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-26 01:11:24,012 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 4 [2022-11-26 01:11:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:24,012 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-26 01:11:24,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:11:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-26 01:11:24,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:11:24,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:24,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:11:24,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-26 01:11:24,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:24,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:11:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:24,226 INFO L85 PathProgramCache]: Analyzing trace with hash 13814412, now seen corresponding path program 1 times [2022-11-26 01:11:24,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:11:24,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431530694] [2022-11-26 01:11:24,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:24,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:24,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:11:24,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:11:24,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-26 01:11:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:11:24,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:11:24,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:11:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:24,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:11:24,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:11:24,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431530694] [2022-11-26 01:11:24,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431530694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:11:24,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:11:24,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:11:24,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173491770] [2022-11-26 01:11:24,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:11:24,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:11:24,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:11:24,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:11:24,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:24,385 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-26 01:11:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:11:24,456 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-26 01:11:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:11:24,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:11:24,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:11:24,459 INFO L225 Difference]: With dead ends: 22 [2022-11-26 01:11:24,459 INFO L226 Difference]: Without dead ends: 21 [2022-11-26 01:11:24,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:11:24,460 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:11:24,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:11:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-26 01:11:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-11-26 01:11:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-11-26 01:11:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-26 01:11:24,465 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2022-11-26 01:11:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:11:24,465 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-26 01:11:24,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-26 01:11:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-26 01:11:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:11:24,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:11:24,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:11:24,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-26 01:11:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:24,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-26 01:11:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:11:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash 428253722, now seen corresponding path program 1 times [2022-11-26 01:11:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:11:24,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933569889] [2022-11-26 01:11:24,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:11:24,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:24,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:11:24,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:11:24,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-26 01:11:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:11:24,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:11:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:11:24,895 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 01:11:24,895 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:11:24,896 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-26 01:11:24,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2022-11-26 01:11:24,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-26 01:11:24,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-26 01:11:24,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2022-11-26 01:11:24,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2022-11-26 01:11:24,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-26 01:11:24,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-26 01:11:24,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-26 01:11:24,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-11-26 01:11:24,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-11-26 01:11:24,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-26 01:11:24,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-26 01:11:25,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:11:25,104 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:11:25,108 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-26 01:11:25,108 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:11:25,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:11:25 BasicIcfg [2022-11-26 01:11:25,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:11:25,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:11:25,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:11:25,155 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:11:25,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:11:02" (3/4) ... [2022-11-26 01:11:25,159 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:11:25,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:11:25,160 INFO L158 Benchmark]: Toolchain (without parser) took 25308.18ms. Allocated memory was 69.2MB in the beginning and 123.7MB in the end (delta: 54.5MB). Free memory was 44.9MB in the beginning and 93.6MB in the end (delta: -48.7MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-11-26 01:11:25,160 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 47.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:11:25,161 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1599.53ms. Allocated memory was 69.2MB in the beginning and 102.8MB in the end (delta: 33.6MB). Free memory was 44.6MB in the beginning and 75.8MB in the end (delta: -31.2MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2022-11-26 01:11:25,161 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.50ms. Allocated memory is still 102.8MB. Free memory was 75.8MB in the beginning and 72.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:11:25,161 INFO L158 Benchmark]: Boogie Preprocessor took 50.21ms. Allocated memory is still 102.8MB. Free memory was 72.2MB in the beginning and 69.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:11:25,162 INFO L158 Benchmark]: RCFGBuilder took 969.03ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 73.9MB in the end (delta: -4.9MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2022-11-26 01:11:25,162 INFO L158 Benchmark]: TraceAbstraction took 22595.77ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 73.3MB in the beginning and 93.6MB in the end (delta: -20.3MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-11-26 01:11:25,163 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 123.7MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:11:25,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 47.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1599.53ms. Allocated memory was 69.2MB in the beginning and 102.8MB in the end (delta: 33.6MB). Free memory was 44.6MB in the beginning and 75.8MB in the end (delta: -31.2MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.50ms. Allocated memory is still 102.8MB. Free memory was 75.8MB in the beginning and 72.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.21ms. Allocated memory is still 102.8MB. Free memory was 72.2MB in the beginning and 69.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 969.03ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 73.9MB in the end (delta: -4.9MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * TraceAbstraction took 22595.77ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 73.3MB in the beginning and 93.6MB in the end (delta: -20.3MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 123.7MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.4s, 114 PlacesBefore, 25 PlacesAfterwards, 115 TransitionsBefore, 23 TransitionsAfterwards, 350 CoEnabledTransitionPairs, 7 FixpointIterations, 93 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 137 TotalNumberOfCompositions, 433 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 358, independent: 334, independent conditional: 0, independent unconditional: 334, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 236, independent: 225, independent conditional: 0, independent unconditional: 225, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 236, independent: 224, independent conditional: 0, independent unconditional: 224, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 51, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 358, independent: 109, independent conditional: 0, independent unconditional: 109, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 236, unknown conditional: 0, unknown unconditional: 236] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1695. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=0, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 22.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 18.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 15 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 133 SizeOfPredicates, 1 NumberOfNonLiveVariables, 274 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 [2022-11-26 01:11:25,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d301cfe3-8a46-4c9f-a4c8-ce7757da1a63/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample