./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-1_3-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba --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 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 --- 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-b5237d8 [2022-11-22 01:33:43,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:33:43,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:33:43,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:33:43,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:33:43,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:33:43,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:33:43,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:33:43,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:33:43,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:33:43,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:33:43,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:33:43,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:33:43,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:33:43,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:33:43,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:33:43,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:33:43,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:33:43,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:33:43,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:33:43,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:33:43,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:33:43,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:33:43,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:33:43,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:33:43,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:33:43,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:33:43,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:33:43,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:33:43,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:33:43,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:33:43,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:33:43,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:33:43,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:33:43,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:33:43,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:33:43,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:33:43,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:33:43,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:33:43,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:33:43,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:33:43,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 01:33:43,969 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:33:43,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:33:43,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:33:43,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:33:43,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:33:43,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:33:43,971 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:33:43,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:33:43,972 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:33:43,972 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:33:43,972 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:33:43,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:33:43,973 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:33:43,973 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:33:43,973 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:33:43,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:33:43,974 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:33:43,974 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:33:43,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:33:43,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:33:43,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:33:43,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:33:43,975 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:33:43,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:33:43,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:33:43,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:33:43,976 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:33:43,977 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:33:43,977 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:33:43,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:33:43,977 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:33:43,977 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:33:43,978 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:33:43,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:33:43,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:33:43,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:33:43,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:33:43,979 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:33:43,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:33:43,979 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:33:43,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:33:43,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:33:43,980 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_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 [2022-11-22 01:33:44,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:33:44,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:33:44,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:33:44,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:33:44,236 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:33:44,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2022-11-22 01:33:47,231 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:33:47,664 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:33:47,665 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/sv-benchmarks/c/ldv-races/race-1_3-join.i [2022-11-22 01:33:47,690 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/data/e25700117/72ae5115112e488a991d3b621fda14fa/FLAG7a75942e6 [2022-11-22 01:33:47,709 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/data/e25700117/72ae5115112e488a991d3b621fda14fa [2022-11-22 01:33:47,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:33:47,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:33:47,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:33:47,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:33:47,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:33:47,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:33:47" (1/1) ... [2022-11-22 01:33:47,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39589af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:47, skipping insertion in model container [2022-11-22 01:33:47,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:33:47" (1/1) ... [2022-11-22 01:33:47,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:33:47,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:33:48,531 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_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2022-11-22 01:33:48,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:33:48,571 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:33:48,624 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_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2022-11-22 01:33:48,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:33:48,757 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:33:48,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48 WrapperNode [2022-11-22 01:33:48,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:33:48,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:33:48,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:33:48,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:33:48,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,841 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-11-22 01:33:48,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:33:48,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:33:48,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:33:48,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:33:48,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:33:48,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:33:48,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:33:48,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:33:48,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (1/1) ... [2022-11-22 01:33:48,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:33:48,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:33:49,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:33:49,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:33:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 01:33:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:33:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 01:33:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:33:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:33:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:33:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:33:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:33:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:33:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:33:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 01:33:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 01:33:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:33:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:33:49,051 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:33:49,442 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:33:49,444 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:33:49,670 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:33:49,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:33:49,706 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:33:49,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:33:49 BoogieIcfgContainer [2022-11-22 01:33:49,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:33:49,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:33:49,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:33:49,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:33:49,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:33:47" (1/3) ... [2022-11-22 01:33:49,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cf960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:33:49, skipping insertion in model container [2022-11-22 01:33:49,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:48" (2/3) ... [2022-11-22 01:33:49,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cf960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:33:49, skipping insertion in model container [2022-11-22 01:33:49,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:33:49" (3/3) ... [2022-11-22 01:33:49,718 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2022-11-22 01:33:49,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:33:49,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-22 01:33:49,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:33:49,781 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-22 01:33:49,812 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:33:49,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 116 transitions, 240 flow [2022-11-22 01:33:49,828 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 116 transitions, 240 flow [2022-11-22 01:33:49,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 116 transitions, 240 flow [2022-11-22 01:33:49,884 INFO L130 PetriNetUnfolder]: 4/138 cut-off events. [2022-11-22 01:33:49,884 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-22 01:33:49,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 138 events. 4/138 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 84. Up to 3 conditions per place. [2022-11-22 01:33:49,889 INFO L119 LiptonReduction]: Number of co-enabled transitions 364 [2022-11-22 01:33:56,531 INFO L134 LiptonReduction]: Checked pairs total: 452 [2022-11-22 01:33:56,532 INFO L136 LiptonReduction]: Total number of compositions: 135 [2022-11-22 01:33:56,543 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 54 flow [2022-11-22 01:33:56,559 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38 states, 21 states have (on average 2.238095238095238) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-11-22 01:33:56,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:33:56,601 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;@13c64857, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:33:56,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-22 01:33:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 21 states have (on average 2.238095238095238) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-11-22 01:33:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 01:33:56,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:56,616 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 01:33:56,616 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)] === [2022-11-22 01:33:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:56,622 INFO L85 PathProgramCache]: Analyzing trace with hash 452, now seen corresponding path program 1 times [2022-11-22 01:33:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:56,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279059344] [2022-11-22 01:33:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:33:56,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:56,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279059344] [2022-11-22 01:33:56,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279059344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:56,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:56,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 01:33:56,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181643613] [2022-11-22 01:33:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:56,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:33:56,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:56,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:33:56,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:33:56,948 INFO L87 Difference]: Start difference. First operand has 38 states, 21 states have (on average 2.238095238095238) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-11-22 01:33:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:57,003 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-11-22 01:33:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:33:57,005 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 [2022-11-22 01:33:57,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:57,014 INFO L225 Difference]: With dead ends: 33 [2022-11-22 01:33:57,014 INFO L226 Difference]: Without dead ends: 30 [2022-11-22 01:33:57,015 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 [2022-11-22 01:33:57,018 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 [2022-11-22 01:33:57,019 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] [2022-11-22 01:33:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-22 01:33:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-22 01:33:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.9) internal successors, (38), 29 states have internal predecessors, (38), 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) [2022-11-22 01:33:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-22 01:33:57,053 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 1 [2022-11-22 01:33:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:57,053 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-22 01:33:57,053 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) [2022-11-22 01:33:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-22 01:33:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:33:57,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:57,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:33:57,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:33:57,055 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)] === [2022-11-22 01:33:57,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash 14509, now seen corresponding path program 1 times [2022-11-22 01:33:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:57,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388550622] [2022-11-22 01:33:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:57,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:33:57,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:57,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388550622] [2022-11-22 01:33:57,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388550622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:57,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:57,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:33:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709968286] [2022-11-22 01:33:57,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:57,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:33:57,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:33:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:33:57,226 INFO L87 Difference]: Start difference. First operand 30 states and 38 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) [2022-11-22 01:33:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:57,272 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2022-11-22 01:33:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:33:57,273 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 [2022-11-22 01:33:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:57,275 INFO L225 Difference]: With dead ends: 26 [2022-11-22 01:33:57,276 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:33:57,277 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 [2022-11-22 01:33:57,279 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:57,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:33:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:33:57,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-22 01:33:57,288 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) [2022-11-22 01:33:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-22 01:33:57,290 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 2 [2022-11-22 01:33:57,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:57,290 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-22 01:33:57,294 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) [2022-11-22 01:33:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-22 01:33:57,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:33:57,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:57,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:33:57,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:33:57,295 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)] === [2022-11-22 01:33:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash 448968, now seen corresponding path program 1 times [2022-11-22 01:33:57,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:57,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007133985] [2022-11-22 01:33:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:57,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:33:57,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007133985] [2022-11-22 01:33:57,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007133985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:57,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:57,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:33:57,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853801567] [2022-11-22 01:33:57,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:57,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:33:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:57,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:33:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:33:57,391 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) [2022-11-22 01:33:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:57,431 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-22 01:33:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:33:57,432 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 [2022-11-22 01:33:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:57,433 INFO L225 Difference]: With dead ends: 25 [2022-11-22 01:33:57,433 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 01:33:57,433 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 [2022-11-22 01:33:57,434 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:57,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:33:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 01:33:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-22 01:33:57,437 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) [2022-11-22 01:33:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-22 01:33:57,438 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 3 [2022-11-22 01:33:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:57,439 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-22 01:33:57,439 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) [2022-11-22 01:33:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-22 01:33:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:33:57,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:57,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:33:57,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:33:57,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-22 01:33:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash 13906477, now seen corresponding path program 1 times [2022-11-22 01:33:57,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:57,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713242199] [2022-11-22 01:33:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:33:57,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:57,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713242199] [2022-11-22 01:33:57,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713242199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:57,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:57,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:33:57,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174920180] [2022-11-22 01:33:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:57,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:33:57,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:33:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:33:57,646 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) [2022-11-22 01:33:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:57,670 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-11-22 01:33:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:33:57,670 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 [2022-11-22 01:33:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:57,671 INFO L225 Difference]: With dead ends: 19 [2022-11-22 01:33:57,671 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 01:33:57,671 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 [2022-11-22 01:33:57,672 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:57,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:33:57,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 01:33:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-22 01:33:57,675 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) [2022-11-22 01:33:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-22 01:33:57,676 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 4 [2022-11-22 01:33:57,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:57,677 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-22 01:33:57,677 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) [2022-11-22 01:33:57,677 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-22 01:33:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:33:57,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:57,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:33:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:33:57,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-22 01:33:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 13906479, now seen corresponding path program 1 times [2022-11-22 01:33:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:57,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952647734] [2022-11-22 01:33:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:33:57,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:57,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952647734] [2022-11-22 01:33:57,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952647734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:57,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:57,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:33:57,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295322936] [2022-11-22 01:33:57,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:57,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:33:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:57,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:33:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:33:57,835 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) [2022-11-22 01:33:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:57,860 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2022-11-22 01:33:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:33:57,861 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 [2022-11-22 01:33:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:57,862 INFO L225 Difference]: With dead ends: 17 [2022-11-22 01:33:57,862 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 01:33:57,862 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 [2022-11-22 01:33:57,863 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:57,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:33:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 01:33:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-22 01:33:57,869 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) [2022-11-22 01:33:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-22 01:33:57,870 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 4 [2022-11-22 01:33:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:57,871 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-22 01:33:57,871 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) [2022-11-22 01:33:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-22 01:33:57,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:33:57,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:57,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:33:57,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:33:57,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-22 01:33:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash 431101023, now seen corresponding path program 1 times [2022-11-22 01:33:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927617419] [2022-11-22 01:33:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:57,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:33:57,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:57,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927617419] [2022-11-22 01:33:57,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927617419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:33:57,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:33:57,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:33:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359414213] [2022-11-22 01:33:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:33:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:33:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:33:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:33:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:33:57,997 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:33:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:58,028 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-22 01:33:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:33:58,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:33:58,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:58,031 INFO L225 Difference]: With dead ends: 21 [2022-11-22 01:33:58,032 INFO L226 Difference]: Without dead ends: 20 [2022-11-22 01:33:58,032 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 [2022-11-22 01:33:58,033 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 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 [2022-11-22 01:33:58,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:33:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-22 01:33:58,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-11-22 01:33:58,045 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) [2022-11-22 01:33:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-22 01:33:58,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 5 [2022-11-22 01:33:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:58,050 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-22 01:33:58,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:33:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-22 01:33:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:33:58,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:58,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:33:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:33:58,053 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-22 01:33:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash 479236478, now seen corresponding path program 1 times [2022-11-22 01:33:58,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:58,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628531473] [2022-11-22 01:33:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:58,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:33:58,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:33:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:33:58,137 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:33:58,138 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:33:58,139 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-22 01:33:58,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2022-11-22 01:33:58,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-22 01:33:58,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-22 01:33:58,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2022-11-22 01:33:58,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2022-11-22 01:33:58,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-22 01:33:58,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-22 01:33:58,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-22 01:33:58,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-11-22 01:33:58,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-11-22 01:33:58,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-22 01:33:58,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:33:58,145 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:33:58,149 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:33:58,150 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:33:58,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:33:58 BasicIcfg [2022-11-22 01:33:58,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:33:58,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:33:58,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:33:58,183 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:33:58,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:33:49" (3/4) ... [2022-11-22 01:33:58,186 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 01:33:58,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:33:58,187 INFO L158 Benchmark]: Toolchain (without parser) took 10472.01ms. Allocated memory was 153.1MB in the beginning and 188.7MB in the end (delta: 35.7MB). Free memory was 120.9MB in the beginning and 109.2MB in the end (delta: 11.7MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2022-11-22 01:33:58,188 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 70.1MB in the beginning and 70.0MB in the end (delta: 89.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:33:58,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1037.69ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 67.7MB in the end (delta: 52.9MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-22 01:33:58,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.23ms. Allocated memory is still 153.1MB. Free memory was 67.7MB in the beginning and 64.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:33:58,189 INFO L158 Benchmark]: Boogie Preprocessor took 68.89ms. Allocated memory is still 153.1MB. Free memory was 64.5MB in the beginning and 62.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:33:58,189 INFO L158 Benchmark]: RCFGBuilder took 796.66ms. Allocated memory is still 153.1MB. Free memory was 62.0MB in the beginning and 103.3MB in the end (delta: -41.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-22 01:33:58,190 INFO L158 Benchmark]: TraceAbstraction took 8470.78ms. Allocated memory was 153.1MB in the beginning and 188.7MB in the end (delta: 35.7MB). Free memory was 102.7MB in the beginning and 109.2MB in the end (delta: -6.5MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-11-22 01:33:58,190 INFO L158 Benchmark]: Witness Printer took 4.41ms. Allocated memory is still 188.7MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:33:58,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 70.1MB in the beginning and 70.0MB in the end (delta: 89.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1037.69ms. Allocated memory is still 153.1MB. Free memory was 120.6MB in the beginning and 67.7MB in the end (delta: 52.9MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.23ms. Allocated memory is still 153.1MB. Free memory was 67.7MB in the beginning and 64.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.89ms. Allocated memory is still 153.1MB. Free memory was 64.5MB in the beginning and 62.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 796.66ms. Allocated memory is still 153.1MB. Free memory was 62.0MB in the beginning and 103.3MB in the end (delta: -41.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8470.78ms. Allocated memory was 153.1MB in the beginning and 188.7MB in the end (delta: 35.7MB). Free memory was 102.7MB in the beginning and 109.2MB in the end (delta: -6.5MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * Witness Printer took 4.41ms. Allocated memory is still 188.7MB. Free memory is still 109.2MB. 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: 6.7s, 115 PlacesBefore, 25 PlacesAfterwards, 116 TransitionsBefore, 23 TransitionsAfterwards, 364 CoEnabledTransitionPairs, 8 FixpointIterations, 87 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 135 TotalNumberOfCompositions, 452 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 378, independent: 344, independent conditional: 0, independent unconditional: 344, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 262, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 262, independent: 247, independent conditional: 0, independent unconditional: 247, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 113, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 378, independent: 94, independent conditional: 0, independent unconditional: 94, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 262, unknown conditional: 0, unknown unconditional: 262] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, 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, EXPR 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))=-1, t1={3:0}] [L1713] 0 return 0; [L1734] RET, EXPR 0 module_init() [L1734] COND FALSE 0 !(module_init()!=0) [L1735] CALL 0 module_exit() [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={4:0}, pdev=4, status={6:0}, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1726] CALL 0 ldv_assert(pdev==4) [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: 8.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 18 mSDtfsCounter, 106 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=38occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 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 [2022-11-22 01:33:58,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba --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 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 --- 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-b5237d8 [2022-11-22 01:34:00,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:34:00,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:34:00,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:34:00,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:34:00,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:34:00,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:34:00,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:34:00,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:34:00,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:34:00,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:34:00,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:34:00,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:34:00,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:34:00,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:34:00,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:34:00,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:34:00,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:34:00,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:34:00,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:34:00,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:34:00,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:34:00,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:34:00,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:34:00,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:34:00,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:34:00,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:34:00,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:34:00,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:34:00,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:34:00,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:34:00,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:34:00,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:34:00,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:34:00,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:34:00,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:34:00,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:34:00,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:34:00,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:34:00,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:34:00,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:34:00,977 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-22 01:34:01,034 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:34:01,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:34:01,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:34:01,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:34:01,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:34:01,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:34:01,037 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:34:01,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:34:01,037 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:34:01,038 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:34:01,039 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:34:01,039 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:34:01,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:34:01,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:34:01,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:34:01,041 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:34:01,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:34:01,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:34:01,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:34:01,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:34:01,042 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:34:01,042 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:34:01,042 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:34:01,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:34:01,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:34:01,043 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 01:34:01,043 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 01:34:01,043 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:34:01,043 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:34:01,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:34:01,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 01:34:01,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:34:01,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:34:01,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:34:01,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:34:01,045 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 01:34:01,045 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 01:34:01,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:34:01,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 01:34:01,046 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_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 [2022-11-22 01:34:01,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:34:01,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:34:01,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:34:01,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:34:01,486 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:34:01,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2022-11-22 01:34:04,512 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:34:04,898 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:34:04,900 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/sv-benchmarks/c/ldv-races/race-1_3-join.i [2022-11-22 01:34:04,938 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/data/939ab716c/847959ce21b94685ba8cfbdc1507038e/FLAGb6285994d [2022-11-22 01:34:04,957 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/data/939ab716c/847959ce21b94685ba8cfbdc1507038e [2022-11-22 01:34:04,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:34:04,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:34:04,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:34:04,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:34:04,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:34:04,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:34:04" (1/1) ... [2022-11-22 01:34:04,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b83f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:04, skipping insertion in model container [2022-11-22 01:34:04,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:34:04" (1/1) ... [2022-11-22 01:34:04,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:34:05,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:34:06,159 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_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2022-11-22 01:34:06,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:34:06,211 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:34:06,256 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_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2022-11-22 01:34:06,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:34:06,434 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:34:06,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06 WrapperNode [2022-11-22 01:34:06,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:34:06,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:34:06,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:34:06,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:34:06,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,495 INFO L138 Inliner]: procedures = 486, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2022-11-22 01:34:06,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:34:06,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:34:06,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:34:06,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:34:06,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:34:06,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:34:06,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:34:06,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:34:06,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (1/1) ... [2022-11-22 01:34:06,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:34:06,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:34:06,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:34:06,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:34:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 01:34:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:34:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-22 01:34:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-22 01:34:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 01:34:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:34:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:34:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:34:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:34:06,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:34:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-22 01:34:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:34:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-22 01:34:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 01:34:06,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 01:34:06,665 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:34:07,091 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:34:07,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:34:07,355 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:34:07,382 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:34:07,383 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:34:07,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:34:07 BoogieIcfgContainer [2022-11-22 01:34:07,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:34:07,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:34:07,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:34:07,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:34:07,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:34:04" (1/3) ... [2022-11-22 01:34:07,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ae9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:34:07, skipping insertion in model container [2022-11-22 01:34:07,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:34:06" (2/3) ... [2022-11-22 01:34:07,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ae9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:34:07, skipping insertion in model container [2022-11-22 01:34:07,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:34:07" (3/3) ... [2022-11-22 01:34:07,394 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2022-11-22 01:34:07,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:34:07,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-22 01:34:07,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:34:07,498 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-22 01:34:07,540 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:34:07,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 115 transitions, 238 flow [2022-11-22 01:34:07,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 115 transitions, 238 flow [2022-11-22 01:34:07,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 115 transitions, 238 flow [2022-11-22 01:34:07,683 INFO L130 PetriNetUnfolder]: 4/136 cut-off events. [2022-11-22 01:34:07,684 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-22 01:34:07,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 4/136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2022-11-22 01:34:07,690 INFO L119 LiptonReduction]: Number of co-enabled transitions 350 [2022-11-22 01:34:23,619 INFO L134 LiptonReduction]: Checked pairs total: 428 [2022-11-22 01:34:23,619 INFO L136 LiptonReduction]: Total number of compositions: 131 [2022-11-22 01:34:23,626 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 54 flow [2022-11-22 01:34:23,638 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38 states, 21 states have (on average 2.238095238095238) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-11-22 01:34:23,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:34:23,660 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;@6dabeebe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:34:23,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-22 01:34:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 21 states have (on average 2.238095238095238) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-11-22 01:34:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 01:34:23,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:23,668 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 01:34:23,669 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)] === [2022-11-22 01:34:23,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash 447, now seen corresponding path program 1 times [2022-11-22 01:34:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:34:23,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507384392] [2022-11-22 01:34:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:23,689 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 [2022-11-22 01:34:23,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:34:23,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:34:23,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:23,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 01:34:23,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:34:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:34:23,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:34:23,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:34:23,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507384392] [2022-11-22 01:34:23,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507384392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:23,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:23,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 01:34:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958594719] [2022-11-22 01:34:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:23,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:34:23,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:34:23,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:34:23,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:34:23,895 INFO L87 Difference]: Start difference. First operand has 38 states, 21 states have (on average 2.238095238095238) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-11-22 01:34:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:23,960 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-11-22 01:34:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:34:23,963 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 [2022-11-22 01:34:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:23,972 INFO L225 Difference]: With dead ends: 33 [2022-11-22 01:34:23,972 INFO L226 Difference]: Without dead ends: 30 [2022-11-22 01:34:23,973 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 [2022-11-22 01:34:23,976 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:23,977 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] [2022-11-22 01:34:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-22 01:34:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-22 01:34:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.9) internal successors, (38), 29 states have internal predecessors, (38), 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) [2022-11-22 01:34:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-22 01:34:24,023 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 1 [2022-11-22 01:34:24,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:24,024 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-22 01:34:24,024 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) [2022-11-22 01:34:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-22 01:34:24,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:34:24,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:24,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:34:24,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:34:24,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:24,239 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)] === [2022-11-22 01:34:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash 14285, now seen corresponding path program 1 times [2022-11-22 01:34:24,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:34:24,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235944425] [2022-11-22 01:34:24,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:24,242 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 [2022-11-22 01:34:24,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:34:24,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:34:24,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:24,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:34:24,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:34:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:34:24,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:34:24,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:34:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235944425] [2022-11-22 01:34:24,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235944425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:24,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:24,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:34:24,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489740698] [2022-11-22 01:34:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:34:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:34:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:34:24,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:34:24,456 INFO L87 Difference]: Start difference. First operand 30 states and 38 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) [2022-11-22 01:34:24,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:24,545 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2022-11-22 01:34:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:34:24,547 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 [2022-11-22 01:34:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:24,548 INFO L225 Difference]: With dead ends: 26 [2022-11-22 01:34:24,548 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:34:24,548 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 [2022-11-22 01:34:24,550 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:24,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:34:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:34:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-22 01:34:24,554 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) [2022-11-22 01:34:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-22 01:34:24,555 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 2 [2022-11-22 01:34:24,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:24,555 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-22 01:34:24,555 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) [2022-11-22 01:34:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-22 01:34:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:34:24,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:24,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:34:24,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:24,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:24,767 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)] === [2022-11-22 01:34:24,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:24,768 INFO L85 PathProgramCache]: Analyzing trace with hash 442177, now seen corresponding path program 1 times [2022-11-22 01:34:24,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:34:24,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487983526] [2022-11-22 01:34:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:24,769 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 [2022-11-22 01:34:24,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:34:24,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:34:24,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:24,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:34:24,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:34:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:34:24,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:34:24,913 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:34:24,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487983526] [2022-11-22 01:34:24,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487983526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:24,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:24,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:34:24,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663972464] [2022-11-22 01:34:24,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:24,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:34:24,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:34:24,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:34:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:34:24,918 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) [2022-11-22 01:34:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:24,996 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-22 01:34:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:34:24,996 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 [2022-11-22 01:34:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:24,997 INFO L225 Difference]: With dead ends: 25 [2022-11-22 01:34:24,997 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 01:34:24,998 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 [2022-11-22 01:34:24,999 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:24,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:34:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 01:34:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-22 01:34:25,006 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) [2022-11-22 01:34:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-22 01:34:25,007 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 3 [2022-11-22 01:34:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:25,008 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-22 01:34:25,008 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) [2022-11-22 01:34:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-22 01:34:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:34:25,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:25,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:34:25,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:25,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:25,223 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)] === [2022-11-22 01:34:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash 13725399, now seen corresponding path program 1 times [2022-11-22 01:34:25,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:34:25,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083776411] [2022-11-22 01:34:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:25,225 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 [2022-11-22 01:34:25,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:34:25,227 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:34:25,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:25,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:34:25,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:34:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:34:25,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:34:25,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:34:25,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083776411] [2022-11-22 01:34:25,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083776411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:25,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:25,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:34:25,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001557920] [2022-11-22 01:34:25,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:25,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:34:25,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:34:25,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:34:25,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:34:25,388 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) [2022-11-22 01:34:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:25,441 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-11-22 01:34:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:34:25,442 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 [2022-11-22 01:34:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:25,443 INFO L225 Difference]: With dead ends: 19 [2022-11-22 01:34:25,443 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 01:34:25,443 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 [2022-11-22 01:34:25,444 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:25,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:34:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 01:34:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-22 01:34:25,447 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) [2022-11-22 01:34:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-22 01:34:25,448 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 4 [2022-11-22 01:34:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:25,449 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-22 01:34:25,449 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) [2022-11-22 01:34:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-22 01:34:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:34:25,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:25,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:34:25,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:25,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:25,664 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)] === [2022-11-22 01:34:25,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash 13725401, now seen corresponding path program 1 times [2022-11-22 01:34:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:34:25,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416977933] [2022-11-22 01:34:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:25,665 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 [2022-11-22 01:34:25,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:34:25,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:34:25,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:25,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:34:25,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:34:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:34:25,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:34:25,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:34:25,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416977933] [2022-11-22 01:34:25,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416977933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:25,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:25,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:34:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550260209] [2022-11-22 01:34:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:25,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:34:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:34:25,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:34:25,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:34:25,899 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) [2022-11-22 01:34:25,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:25,947 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2022-11-22 01:34:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:34:25,948 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 [2022-11-22 01:34:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:25,948 INFO L225 Difference]: With dead ends: 17 [2022-11-22 01:34:25,948 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 01:34:25,949 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 [2022-11-22 01:34:25,949 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:25,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:34:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 01:34:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-22 01:34:25,952 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) [2022-11-22 01:34:25,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-22 01:34:25,952 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 4 [2022-11-22 01:34:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:25,953 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-22 01:34:25,953 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) [2022-11-22 01:34:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-22 01:34:25,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:34:25,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:25,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:34:25,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:26,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:26,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-22 01:34:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 425487663, now seen corresponding path program 1 times [2022-11-22 01:34:26,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:34:26,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861622669] [2022-11-22 01:34:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:26,168 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 [2022-11-22 01:34:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:34:26,169 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:34:26,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:26,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:34:26,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:34:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:34:26,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:34:26,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:34:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861622669] [2022-11-22 01:34:26,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861622669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:26,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:26,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:34:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871595923] [2022-11-22 01:34:26,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:26,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:34:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:34:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:34:26,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:34:26,308 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:26,364 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-22 01:34:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:34:26,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:34:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:26,367 INFO L225 Difference]: With dead ends: 21 [2022-11-22 01:34:26,367 INFO L226 Difference]: Without dead ends: 20 [2022-11-22 01:34:26,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:34:26,368 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 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 [2022-11-22 01:34:26,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:34:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-22 01:34:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-11-22 01:34:26,371 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) [2022-11-22 01:34:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-22 01:34:26,372 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 5 [2022-11-22 01:34:26,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:26,372 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-22 01:34:26,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-22 01:34:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:34:26,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:26,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:34:26,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:26,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:26,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-22 01:34:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash 305222097, now seen corresponding path program 1 times [2022-11-22 01:34:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:34:26,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248616785] [2022-11-22 01:34:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:26,584 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 [2022-11-22 01:34:26,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:34:26,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:34:26,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:34:26,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:34:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:34:26,823 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-22 01:34:26,824 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:34:26,825 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-22 01:34:26,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2022-11-22 01:34:26,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-22 01:34:26,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-22 01:34:26,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2022-11-22 01:34:26,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2022-11-22 01:34:26,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-22 01:34:26,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-22 01:34:26,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-22 01:34:26,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-11-22 01:34:26,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-11-22 01:34:26,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-22 01:34:26,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:27,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:34:27,031 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:27,035 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:34:27,035 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:34:27,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:34:27 BasicIcfg [2022-11-22 01:34:27,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:34:27,054 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:34:27,054 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:34:27,054 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:34:27,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:34:07" (3/4) ... [2022-11-22 01:34:27,058 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 01:34:27,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:34:27,058 INFO L158 Benchmark]: Toolchain (without parser) took 22096.90ms. Allocated memory was 71.3MB in the beginning and 109.1MB in the end (delta: 37.7MB). Free memory was 46.1MB in the beginning and 47.8MB in the end (delta: -1.7MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2022-11-22 01:34:27,059 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:34:27,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1470.54ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 45.8MB in the beginning and 61.2MB in the end (delta: -15.5MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2022-11-22 01:34:27,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.65ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 57.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:34:27,059 INFO L158 Benchmark]: Boogie Preprocessor took 55.47ms. Allocated memory is still 90.2MB. Free memory was 57.9MB in the beginning and 55.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:34:27,059 INFO L158 Benchmark]: RCFGBuilder took 826.31ms. Allocated memory is still 90.2MB. Free memory was 55.0MB in the beginning and 51.9MB in the end (delta: 3.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 01:34:27,060 INFO L158 Benchmark]: TraceAbstraction took 19666.01ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 51.1MB in the beginning and 48.0MB in the end (delta: 3.1MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-11-22 01:34:27,060 INFO L158 Benchmark]: Witness Printer took 3.84ms. Allocated memory is still 109.1MB. Free memory was 48.0MB in the beginning and 47.8MB in the end (delta: 205.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:34:27,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1470.54ms. Allocated memory was 71.3MB in the beginning and 90.2MB in the end (delta: 18.9MB). Free memory was 45.8MB in the beginning and 61.2MB in the end (delta: -15.5MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.65ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 57.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.47ms. Allocated memory is still 90.2MB. Free memory was 57.9MB in the beginning and 55.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 826.31ms. Allocated memory is still 90.2MB. Free memory was 55.0MB in the beginning and 51.9MB in the end (delta: 3.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 19666.01ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 51.1MB in the beginning and 48.0MB in the end (delta: 3.1MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Witness Printer took 3.84ms. Allocated memory is still 109.1MB. Free memory was 48.0MB in the beginning and 47.8MB in the end (delta: 205.1kB). 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: 16.0s, 114 PlacesBefore, 25 PlacesAfterwards, 115 TransitionsBefore, 23 TransitionsAfterwards, 350 CoEnabledTransitionPairs, 7 FixpointIterations, 84 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 131 TotalNumberOfCompositions, 428 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 353, independent: 323, independent conditional: 0, independent unconditional: 323, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 246, independent: 231, independent conditional: 0, independent unconditional: 231, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 353, independent: 89, independent conditional: 0, independent unconditional: 89, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 246, unknown conditional: 0, unknown unconditional: 246] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, 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, EXPR 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}] [L1713] 0 return 0; [L1734] RET, EXPR 0 module_init() [L1734] COND FALSE 0 !(module_init()!=0) [L1735] CALL 0 module_exit() [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={4:0}, pdev=4, status={7:0}, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1726] CALL 0 ldv_assert(pdev==4) [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: 19.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 16.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 16 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 86 SizeOfPredicates, 1 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 21 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 [2022-11-22 01:34:27,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8db6d99-20ba-49bf-8927-7f6ddaec8f89/bin/utaipan-g80aRyZoba/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