./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12_variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12_variant-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh --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 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 --- 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-2329fc7 [2022-12-14 07:54:45,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:54:45,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:54:45,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:54:45,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:54:45,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:54:45,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:54:45,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:54:45,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:54:45,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:54:45,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:54:45,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:54:45,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:54:45,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:54:45,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:54:45,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:54:45,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:54:45,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:54:45,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:54:45,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:54:45,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:54:45,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:54:45,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:54:45,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:54:45,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:54:45,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:54:45,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:54:45,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:54:45,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:54:45,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:54:45,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:54:45,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:54:45,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:54:45,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:54:45,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:54:45,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:54:45,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:54:45,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:54:45,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:54:45,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:54:45,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:54:45,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 07:54:45,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:54:45,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:54:45,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:54:45,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:54:45,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:54:45,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:54:45,172 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:54:45,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:54:45,173 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:54:45,173 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:54:45,173 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:54:45,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:54:45,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:54:45,174 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:54:45,174 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:54:45,174 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:54:45,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:54:45,174 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:54:45,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 07:54:45,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 07:54:45,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:54:45,175 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:54:45,175 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:54:45,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:54:45,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:54:45,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:54:45,176 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 07:54:45,176 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 07:54:45,176 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 07:54:45,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:54:45,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:54:45,177 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:54:45,177 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:54:45,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:54:45,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:54:45,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:54:45,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:54:45,178 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:54:45,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:54:45,178 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:54:45,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:54:45,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:54:45,178 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_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 [2022-12-14 07:54:45,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:54:45,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:54:45,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:54:45,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:54:45,394 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:54:45,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-lit/sssc12_variant-2.i [2022-12-14 07:54:47,959 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:54:48,182 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:54:48,182 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/sv-benchmarks/c/pthread-lit/sssc12_variant-2.i [2022-12-14 07:54:48,195 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/data/989e3a42c/d2b82d0908b346be893438061198b13d/FLAG290b9da84 [2022-12-14 07:54:48,532 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/data/989e3a42c/d2b82d0908b346be893438061198b13d [2022-12-14 07:54:48,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:54:48,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:54:48,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:54:48,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:54:48,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:54:48,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:48,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340bc74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48, skipping insertion in model container [2022-12-14 07:54:48,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:48,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:54:48,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:54:48,874 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_0372cebe-6666-40a3-9b93-a96aa729324b/sv-benchmarks/c/pthread-lit/sssc12_variant-2.i[46865,46878] [2022-12-14 07:54:48,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:48,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:48,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:48,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:48,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:54:48,899 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:54:48,934 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_0372cebe-6666-40a3-9b93-a96aa729324b/sv-benchmarks/c/pthread-lit/sssc12_variant-2.i[46865,46878] [2022-12-14 07:54:48,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:48,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:48,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:54:48,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:54:48,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:54:48,982 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:54:48,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48 WrapperNode [2022-12-14 07:54:48,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:54:48,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:54:48,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:54:48,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:54:48,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,022 INFO L138 Inliner]: procedures = 275, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2022-12-14 07:54:49,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:54:49,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:54:49,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:54:49,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:54:49,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:54:49,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:54:49,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:54:49,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:54:49,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (1/1) ... [2022-12-14 07:54:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:54:49,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:54:49,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:54:49,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:54:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 07:54:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-12-14 07:54:49,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:54:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:54:49,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:54:49,097 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 07:54:49,193 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:54:49,194 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:54:49,355 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:54:49,377 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:54:49,377 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 07:54:49,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:49 BoogieIcfgContainer [2022-12-14 07:54:49,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:54:49,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:54:49,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:54:49,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:54:49,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:54:48" (1/3) ... [2022-12-14 07:54:49,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f582a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:54:49, skipping insertion in model container [2022-12-14 07:54:49,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:48" (2/3) ... [2022-12-14 07:54:49,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f582a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:54:49, skipping insertion in model container [2022-12-14 07:54:49,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:49" (3/3) ... [2022-12-14 07:54:49,386 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant-2.i [2022-12-14 07:54:49,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:54:49,400 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 07:54:49,400 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 07:54:49,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 07:54:49,461 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:54:49,471 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 100 transitions, 205 flow [2022-12-14 07:54:49,473 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 100 transitions, 205 flow [2022-12-14 07:54:49,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 100 transitions, 205 flow [2022-12-14 07:54:49,507 INFO L130 PetriNetUnfolder]: 7/117 cut-off events. [2022-12-14 07:54:49,507 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 07:54:49,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 117 events. 7/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2022-12-14 07:54:49,512 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2022-12-14 07:54:52,384 INFO L134 LiptonReduction]: Checked pairs total: 2278 [2022-12-14 07:54:52,384 INFO L136 LiptonReduction]: Total number of compositions: 111 [2022-12-14 07:54:52,391 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 21 transitions, 47 flow [2022-12-14 07:54:52,402 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 101 states, 59 states have (on average 3.1186440677966103) internal successors, (184), 100 states have internal predecessors, (184), 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) [2022-12-14 07:54:52,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:54:52,418 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;@69456ca9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:54:52,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-14 07:54:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 59 states have (on average 3.1186440677966103) internal successors, (184), 100 states have internal predecessors, (184), 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) [2022-12-14 07:54:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 07:54:52,423 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:52,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 07:54:52,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-12-14 07:54:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash 14616, now seen corresponding path program 1 times [2022-12-14 07:54:52,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:52,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497224304] [2022-12-14 07:54:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:52,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:52,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:52,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497224304] [2022-12-14 07:54:52,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497224304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:52,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:52,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:54:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454394719] [2022-12-14 07:54:52,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:52,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:54:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:54:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:54:52,696 INFO L87 Difference]: Start difference. First operand has 101 states, 59 states have (on average 3.1186440677966103) internal successors, (184), 100 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:52,726 INFO L93 Difference]: Finished difference Result 44 states and 76 transitions. [2022-12-14 07:54:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:54:52,729 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 [2022-12-14 07:54:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:52,736 INFO L225 Difference]: With dead ends: 44 [2022-12-14 07:54:52,736 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 07:54:52,737 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 [2022-12-14 07:54:52,740 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:52,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:54:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 07:54:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-14 07:54:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 43 states have internal predecessors, (76), 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) [2022-12-14 07:54:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 76 transitions. [2022-12-14 07:54:52,766 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 76 transitions. Word has length 2 [2022-12-14 07:54:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:52,766 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 76 transitions. [2022-12-14 07:54:52,766 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) [2022-12-14 07:54:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 76 transitions. [2022-12-14 07:54:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 07:54:52,767 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:52,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 07:54:52,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:54:52,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-12-14 07:54:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash 14617, now seen corresponding path program 1 times [2022-12-14 07:54:52,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:52,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645456845] [2022-12-14 07:54:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:52,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:52,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645456845] [2022-12-14 07:54:52,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645456845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:52,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:52,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:54:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980310616] [2022-12-14 07:54:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:52,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:54:52,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:52,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:54:52,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:54:52,856 INFO L87 Difference]: Start difference. First operand 44 states and 76 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) [2022-12-14 07:54:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:52,873 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2022-12-14 07:54:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:54:52,873 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 [2022-12-14 07:54:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:52,874 INFO L225 Difference]: With dead ends: 35 [2022-12-14 07:54:52,874 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 07:54:52,874 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 [2022-12-14 07:54:52,875 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:52,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:54:52,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 07:54:52,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-14 07:54:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.903225806451613) internal successors, (59), 34 states have internal predecessors, (59), 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) [2022-12-14 07:54:52,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 59 transitions. [2022-12-14 07:54:52,880 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 59 transitions. Word has length 2 [2022-12-14 07:54:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:52,881 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 59 transitions. [2022-12-14 07:54:52,881 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) [2022-12-14 07:54:52,881 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 59 transitions. [2022-12-14 07:54:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:54:52,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:52,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:54:52,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:54:52,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-12-14 07:54:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 435713663, now seen corresponding path program 1 times [2022-12-14 07:54:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:52,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098150479] [2022-12-14 07:54:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:54:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:52,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:54:52,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098150479] [2022-12-14 07:54:52,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098150479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:54:52,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:54:52,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:54:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36416279] [2022-12-14 07:54:52,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:54:52,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:54:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:52,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:54:52,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:54:52,950 INFO L87 Difference]: Start difference. First operand 35 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-12-14 07:54:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:54:52,966 INFO L93 Difference]: Finished difference Result 31 states and 52 transitions. [2022-12-14 07:54:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:54:52,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2022-12-14 07:54:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:54:52,967 INFO L225 Difference]: With dead ends: 31 [2022-12-14 07:54:52,967 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 07:54:52,967 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 [2022-12-14 07:54:52,968 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:54:52,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:54:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 07:54:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 07:54:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:54:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 52 transitions. [2022-12-14 07:54:52,971 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 52 transitions. Word has length 5 [2022-12-14 07:54:52,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:54:52,971 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 52 transitions. [2022-12-14 07:54:52,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-12-14 07:54:52,972 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 52 transitions. [2022-12-14 07:54:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:54:52,972 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:54:52,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:54:52,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:54:52,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-12-14 07:54:52,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:54:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash 435713664, now seen corresponding path program 1 times [2022-12-14 07:54:52,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:54:52,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094938495] [2022-12-14 07:54:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:54:52,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:54:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:54:52,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:54:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:54:53,021 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:54:53,022 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:54:53,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2022-12-14 07:54:53,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2022-12-14 07:54:53,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2022-12-14 07:54:53,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (14 of 18 remaining) [2022-12-14 07:54:53,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 18 remaining) [2022-12-14 07:54:53,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2022-12-14 07:54:53,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2022-12-14 07:54:53,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2022-12-14 07:54:53,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2022-12-14 07:54:53,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2022-12-14 07:54:53,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2022-12-14 07:54:53,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 18 remaining) [2022-12-14 07:54:53,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2022-12-14 07:54:53,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2022-12-14 07:54:53,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2022-12-14 07:54:53,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2022-12-14 07:54:53,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2022-12-14 07:54:53,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 18 remaining) [2022-12-14 07:54:53,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:54:53,029 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 07:54:53,033 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 07:54:53,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:54:53,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:54:53 BasicIcfg [2022-12-14 07:54:53,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:54:53,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:54:53,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:54:53,048 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:54:53,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:49" (3/4) ... [2022-12-14 07:54:53,050 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 07:54:53,075 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:54:53,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:54:53,076 INFO L158 Benchmark]: Toolchain (without parser) took 4538.21ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 81.3MB in the beginning and 57.3MB in the end (delta: 24.1MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2022-12-14 07:54:53,076 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:54:53,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.17ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 81.3MB in the beginning and 111.6MB in the end (delta: -30.3MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2022-12-14 07:54:53,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.62ms. Allocated memory is still 142.6MB. Free memory was 113.1MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:54:53,076 INFO L158 Benchmark]: Boogie Preprocessor took 19.85ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 109.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:54:53,077 INFO L158 Benchmark]: RCFGBuilder took 336.42ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 92.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 07:54:53,077 INFO L158 Benchmark]: TraceAbstraction took 3666.52ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 60.4MB in the end (delta: 31.7MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-12-14 07:54:53,077 INFO L158 Benchmark]: Witness Printer took 27.21ms. Allocated memory is still 142.6MB. Free memory was 60.4MB in the beginning and 57.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:54:53,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.17ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 81.3MB in the beginning and 111.6MB in the end (delta: -30.3MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.62ms. Allocated memory is still 142.6MB. Free memory was 113.1MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.85ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 109.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.42ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 92.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3666.52ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 60.4MB in the end (delta: 31.7MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Witness Printer took 27.21ms. Allocated memory is still 142.6MB. Free memory was 60.4MB in the beginning and 57.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 97 PlacesBefore, 23 PlacesAfterwards, 100 TransitionsBefore, 21 TransitionsAfterwards, 1680 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 111 TotalNumberOfCompositions, 2278 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1658, independent: 1588, independent conditional: 0, independent unconditional: 1588, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1110, independent: 1081, independent conditional: 0, independent unconditional: 1081, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1110, independent: 1068, independent conditional: 0, independent unconditional: 1068, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 91, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1658, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 1110, unknown conditional: 0, unknown unconditional: 1110] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1005] 0 int *data; [L1006] 0 volatile int len; [L1007] 0 volatile int next; [L1008] 0 volatile int lock; [L1040] 0 pthread_t t; [L1041] 0 lock=0 [L1042] 0 next = 0 [L1043] 0 len = __VERIFIER_nondet_int() [L1044] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1044] RET 0 assume_abort_if_not(len > 0) [L1045] 0 data = malloc(sizeof(int) * len) [L1046] COND TRUE 0 1 [L1047] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741826:1073741825}, argv={1073741826:1073741825}, data={-2:0}, len=1073741824, lock=0, next=0, pthread_create(&t, 0, thr, 0)=-1, t={3:0}] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 [L1030] RET 1 release() [L1031] COND TRUE 1 c < end [L1032] 1 data[c] = 0 - 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: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1047]: 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. - 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: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 134 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 3 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 proved your program to be incorrect! [2022-12-14 07:54:53,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0372cebe-6666-40a3-9b93-a96aa729324b/bin/utaipan-gh47qXpMRh/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)