./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS --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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- 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-8393723 [2022-11-19 08:09:04,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:09:04,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:09:04,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:09:04,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:09:04,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:09:04,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:09:04,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:09:04,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:09:04,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:09:04,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:09:04,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:09:04,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:09:04,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:09:04,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:09:04,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:09:04,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:09:05,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:09:05,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:09:05,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:09:05,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:09:05,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:09:05,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:09:05,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:09:05,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:09:05,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:09:05,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:09:05,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:09:05,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:09:05,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:09:05,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:09:05,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:09:05,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:09:05,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:09:05,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:09:05,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:09:05,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:09:05,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:09:05,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:09:05,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:09:05,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:09:05,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 08:09:05,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:09:05,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:09:05,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:09:05,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:09:05,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:09:05,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:09:05,082 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:09:05,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:09:05,083 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:09:05,083 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:09:05,084 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:09:05,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:09:05,085 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:09:05,085 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:09:05,085 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:09:05,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:09:05,086 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:09:05,086 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:09:05,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 08:09:05,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 08:09:05,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:09:05,089 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:09:05,090 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:09:05,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:09:05,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:09:05,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:09:05,090 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 08:09:05,091 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 08:09:05,091 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 08:09:05,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:09:05,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:09:05,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:09:05,092 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:09:05,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:09:05,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:09:05,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:09:05,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:09:05,093 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:09:05,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:09:05,094 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:09:05,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:09:05,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:09:05,095 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_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2022-11-19 08:09:05,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:09:05,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:09:05,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:09:05,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:09:05,421 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:09:05,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-11-19 08:09:05,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/data/71c9cc1d4/83e8ed55f1bb43cf8175164c4213c11a/FLAG0faccc414 [2022-11-19 08:09:06,153 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:09:06,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-11-19 08:09:06,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/data/71c9cc1d4/83e8ed55f1bb43cf8175164c4213c11a/FLAG0faccc414 [2022-11-19 08:09:06,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/data/71c9cc1d4/83e8ed55f1bb43cf8175164c4213c11a [2022-11-19 08:09:06,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:09:06,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:09:06,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:09:06,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:09:06,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:09:06,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:09:06" (1/1) ... [2022-11-19 08:09:06,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7795c546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:06, skipping insertion in model container [2022-11-19 08:09:06,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:09:06" (1/1) ... [2022-11-19 08:09:06,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:09:06,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:09:06,962 WARN L234 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_8cc63648-e710-4900-a5d7-e11b54d0cd3b/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-11-19 08:09:06,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:09:07,004 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:09:07,056 WARN L234 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_8cc63648-e710-4900-a5d7-e11b54d0cd3b/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-11-19 08:09:07,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:09:07,120 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:09:07,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07 WrapperNode [2022-11-19 08:09:07,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:09:07,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:09:07,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:09:07,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:09:07,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,192 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-11-19 08:09:07,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:09:07,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:09:07,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:09:07,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:09:07,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:09:07,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:09:07,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:09:07,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:09:07,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (1/1) ... [2022-11-19 08:09:07,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:09:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:07,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:09:07,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:09:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:09:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:09:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-19 08:09:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:09:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:09:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-19 08:09:07,339 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-19 08:09:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:09:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:09:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:09:07,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:09:07,342 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 08:09:07,590 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:09:07,592 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:09:07,940 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:09:07,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:09:07,948 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-19 08:09:07,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:09:07 BoogieIcfgContainer [2022-11-19 08:09:07,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:09:07,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:09:07,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:09:07,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:09:07,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:09:06" (1/3) ... [2022-11-19 08:09:07,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5022264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:09:07, skipping insertion in model container [2022-11-19 08:09:07,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:07" (2/3) ... [2022-11-19 08:09:07,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5022264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:09:07, skipping insertion in model container [2022-11-19 08:09:07,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:09:07" (3/3) ... [2022-11-19 08:09:07,973 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2022-11-19 08:09:07,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:09:07,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-19 08:09:07,993 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 08:09:08,111 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:09:08,157 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:09:08,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 122 transitions, 249 flow [2022-11-19 08:09:08,176 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 122 transitions, 249 flow [2022-11-19 08:09:08,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 122 transitions, 249 flow [2022-11-19 08:09:08,249 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2022-11-19 08:09:08,249 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 08:09:08,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 163 events. 14/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 457 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-11-19 08:09:08,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 3760 [2022-11-19 08:09:12,754 INFO L134 LiptonReduction]: Checked pairs total: 7999 [2022-11-19 08:09:12,754 INFO L136 LiptonReduction]: Total number of compositions: 113 [2022-11-19 08:09:12,762 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 46 transitions, 97 flow [2022-11-19 08:09:12,813 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 354 states, 277 states have (on average 2.96028880866426) internal successors, (820), 353 states have internal predecessors, (820), 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) [2022-11-19 08:09:12,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:12,850 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;@714a4aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:12,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-19 08:09:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 277 states have (on average 2.96028880866426) internal successors, (820), 353 states have internal predecessors, (820), 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) [2022-11-19 08:09:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 08:09:12,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:12,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 08:09:12,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-19 08:09:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 15003, now seen corresponding path program 1 times [2022-11-19 08:09:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:12,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994725184] [2022-11-19 08:09:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:12,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:13,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:13,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994725184] [2022-11-19 08:09:13,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994725184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:13,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:13,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:09:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781730068] [2022-11-19 08:09:13,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:13,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:13,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:13,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:13,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:13,293 INFO L87 Difference]: Start difference. First operand has 354 states, 277 states have (on average 2.96028880866426) internal successors, (820), 353 states have internal predecessors, (820), 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) [2022-11-19 08:09:13,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:13,451 INFO L93 Difference]: Finished difference Result 309 states and 579 transitions. [2022-11-19 08:09:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:13,455 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 [2022-11-19 08:09:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:13,479 INFO L225 Difference]: With dead ends: 309 [2022-11-19 08:09:13,479 INFO L226 Difference]: Without dead ends: 307 [2022-11-19 08:09:13,480 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 [2022-11-19 08:09:13,486 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:13,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:13,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-19 08:09:13,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2022-11-19 08:09:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 251 states have (on average 2.2908366533864544) internal successors, (575), 306 states have internal predecessors, (575), 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) [2022-11-19 08:09:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 575 transitions. [2022-11-19 08:09:13,566 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 575 transitions. Word has length 2 [2022-11-19 08:09:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:13,566 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 575 transitions. [2022-11-19 08:09:13,567 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) [2022-11-19 08:09:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 575 transitions. [2022-11-19 08:09:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 08:09:13,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:13,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 08:09:13,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:09:13,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-19 08:09:13,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:13,569 INFO L85 PathProgramCache]: Analyzing trace with hash 15004, now seen corresponding path program 1 times [2022-11-19 08:09:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:13,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740226886] [2022-11-19 08:09:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:13,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:13,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:13,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740226886] [2022-11-19 08:09:13,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740226886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:13,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:13,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:09:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909835400] [2022-11-19 08:09:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:13,636 INFO L87 Difference]: Start difference. First operand 307 states and 575 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) [2022-11-19 08:09:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:13,724 INFO L93 Difference]: Finished difference Result 288 states and 539 transitions. [2022-11-19 08:09:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:13,725 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 [2022-11-19 08:09:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:13,727 INFO L225 Difference]: With dead ends: 288 [2022-11-19 08:09:13,727 INFO L226 Difference]: Without dead ends: 288 [2022-11-19 08:09:13,727 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 [2022-11-19 08:09:13,728 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:13,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-19 08:09:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-11-19 08:09:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 240 states have (on average 2.245833333333333) internal successors, (539), 287 states have internal predecessors, (539), 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) [2022-11-19 08:09:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 539 transitions. [2022-11-19 08:09:13,747 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 539 transitions. Word has length 2 [2022-11-19 08:09:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:13,748 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 539 transitions. [2022-11-19 08:09:13,748 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) [2022-11-19 08:09:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 539 transitions. [2022-11-19 08:09:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:09:13,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:13,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:09:13,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:09:13,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-19 08:09:13,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:13,750 INFO L85 PathProgramCache]: Analyzing trace with hash 447342492, now seen corresponding path program 1 times [2022-11-19 08:09:13,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:13,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395628575] [2022-11-19 08:09:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:13,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:13,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:13,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395628575] [2022-11-19 08:09:13,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395628575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:13,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415737495] [2022-11-19 08:09:13,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:13,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:13,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:13,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:13,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:09:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:14,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 08:09:14,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:14,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:09:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:14,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:14,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415737495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:14,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [51210809] [2022-11-19 08:09:14,278 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:09:14,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:09:14,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-19 08:09:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132819417] [2022-11-19 08:09:14,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:09:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:09:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:14,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:09:14,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:09:14,282 INFO L87 Difference]: Start difference. First operand 288 states and 539 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:09:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:14,406 INFO L93 Difference]: Finished difference Result 75 states and 125 transitions. [2022-11-19 08:09:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:09:14,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 08:09:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:14,410 INFO L225 Difference]: With dead ends: 75 [2022-11-19 08:09:14,410 INFO L226 Difference]: Without dead ends: 75 [2022-11-19 08:09:14,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:09:14,415 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 111 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:14,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 27 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-19 08:09:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-19 08:09:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.838235294117647) internal successors, (125), 74 states have internal predecessors, (125), 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) [2022-11-19 08:09:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 125 transitions. [2022-11-19 08:09:14,438 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 125 transitions. Word has length 5 [2022-11-19 08:09:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:14,439 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 125 transitions. [2022-11-19 08:09:14,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:09:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 125 transitions. [2022-11-19 08:09:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:09:14,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:14,441 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 08:09:14,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:14,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-19 08:09:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 982715753, now seen corresponding path program 1 times [2022-11-19 08:09:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:14,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351812951] [2022-11-19 08:09:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:14,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:14,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:09:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:14,727 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:09:14,727 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:09:14,728 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-19 08:09:14,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-11-19 08:09:14,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-11-19 08:09:14,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-11-19 08:09:14,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-11-19 08:09:14,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (17 of 23 remaining) [2022-11-19 08:09:14,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (16 of 23 remaining) [2022-11-19 08:09:14,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-11-19 08:09:14,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-11-19 08:09:14,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2022-11-19 08:09:14,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2022-11-19 08:09:14,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 23 remaining) [2022-11-19 08:09:14,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2022-11-19 08:09:14,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2022-11-19 08:09:14,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 23 remaining) [2022-11-19 08:09:14,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining) [2022-11-19 08:09:14,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2022-11-19 08:09:14,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 23 remaining) [2022-11-19 08:09:14,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2022-11-19 08:09:14,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2022-11-19 08:09:14,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 23 remaining) [2022-11-19 08:09:14,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2022-11-19 08:09:14,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 23 remaining) [2022-11-19 08:09:14,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:09:14,746 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 08:09:14,748 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:09:14,748 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 08:09:14,779 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:09:14,782 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:09:14,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 163 transitions, 338 flow [2022-11-19 08:09:14,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 163 transitions, 338 flow [2022-11-19 08:09:14,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 163 transitions, 338 flow [2022-11-19 08:09:14,846 INFO L130 PetriNetUnfolder]: 24/250 cut-off events. [2022-11-19 08:09:14,846 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 08:09:14,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 250 events. 24/250 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 855 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 164. Up to 6 conditions per place. [2022-11-19 08:09:14,862 INFO L119 LiptonReduction]: Number of co-enabled transitions 10800 [2022-11-19 08:09:19,843 INFO L134 LiptonReduction]: Checked pairs total: 29186 [2022-11-19 08:09:19,843 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-11-19 08:09:19,844 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 73 transitions, 158 flow [2022-11-19 08:09:20,097 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7553 states, 6838 states have (on average 3.9243930973968997) internal successors, (26835), 7552 states have internal predecessors, (26835), 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) [2022-11-19 08:09:20,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:20,101 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;@714a4aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:20,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-19 08:09:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 7553 states, 6838 states have (on average 3.9243930973968997) internal successors, (26835), 7552 states have internal predecessors, (26835), 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) [2022-11-19 08:09:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 08:09:20,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:20,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 08:09:20,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-19 08:09:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash 26420, now seen corresponding path program 1 times [2022-11-19 08:09:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:20,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155156206] [2022-11-19 08:09:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:20,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:20,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:20,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155156206] [2022-11-19 08:09:20,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155156206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:20,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:20,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:09:20,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461786766] [2022-11-19 08:09:20,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:20,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:20,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:20,251 INFO L87 Difference]: Start difference. First operand has 7553 states, 6838 states have (on average 3.9243930973968997) internal successors, (26835), 7552 states have internal predecessors, (26835), 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) [2022-11-19 08:09:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:20,445 INFO L93 Difference]: Finished difference Result 6140 states and 17118 transitions. [2022-11-19 08:09:20,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:20,446 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 [2022-11-19 08:09:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:20,482 INFO L225 Difference]: With dead ends: 6140 [2022-11-19 08:09:20,483 INFO L226 Difference]: Without dead ends: 6130 [2022-11-19 08:09:20,483 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 [2022-11-19 08:09:20,484 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:20,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 21 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:20,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-11-19 08:09:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 6130. [2022-11-19 08:09:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6130 states, 5690 states have (on average 3.0035149384885766) internal successors, (17090), 6129 states have internal predecessors, (17090), 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) [2022-11-19 08:09:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 17090 transitions. [2022-11-19 08:09:20,742 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 17090 transitions. Word has length 2 [2022-11-19 08:09:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:20,743 INFO L495 AbstractCegarLoop]: Abstraction has 6130 states and 17090 transitions. [2022-11-19 08:09:20,743 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) [2022-11-19 08:09:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 17090 transitions. [2022-11-19 08:09:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 08:09:20,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:20,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 08:09:20,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:09:20,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-19 08:09:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash 26422, now seen corresponding path program 1 times [2022-11-19 08:09:20,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:20,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709897864] [2022-11-19 08:09:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:20,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:20,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:20,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709897864] [2022-11-19 08:09:20,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709897864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:20,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:20,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:09:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420455105] [2022-11-19 08:09:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:20,813 INFO L87 Difference]: Start difference. First operand 6130 states and 17090 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) [2022-11-19 08:09:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:20,959 INFO L93 Difference]: Finished difference Result 5787 states and 16118 transitions. [2022-11-19 08:09:20,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:20,960 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 [2022-11-19 08:09:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:20,992 INFO L225 Difference]: With dead ends: 5787 [2022-11-19 08:09:20,992 INFO L226 Difference]: Without dead ends: 5787 [2022-11-19 08:09:20,993 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 [2022-11-19 08:09:20,994 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:20,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 11 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2022-11-19 08:09:21,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5787. [2022-11-19 08:09:21,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5787 states, 5404 states have (on average 2.9826054774241304) internal successors, (16118), 5786 states have internal predecessors, (16118), 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) [2022-11-19 08:09:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 16118 transitions. [2022-11-19 08:09:21,218 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 16118 transitions. Word has length 2 [2022-11-19 08:09:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:21,218 INFO L495 AbstractCegarLoop]: Abstraction has 5787 states and 16118 transitions. [2022-11-19 08:09:21,219 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) [2022-11-19 08:09:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 16118 transitions. [2022-11-19 08:09:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:09:21,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:21,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:09:21,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:09:21,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-19 08:09:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:21,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1349752695, now seen corresponding path program 1 times [2022-11-19 08:09:21,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:21,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250904859] [2022-11-19 08:09:21,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:21,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:21,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:21,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250904859] [2022-11-19 08:09:21,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250904859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:21,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:21,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947134122] [2022-11-19 08:09:21,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:21,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:09:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:09:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:09:21,379 INFO L87 Difference]: Start difference. First operand 5787 states and 16118 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:09:21,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:21,655 INFO L93 Difference]: Finished difference Result 5445 states and 15147 transitions. [2022-11-19 08:09:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:09:21,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 08:09:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:21,704 INFO L225 Difference]: With dead ends: 5445 [2022-11-19 08:09:21,704 INFO L226 Difference]: Without dead ends: 5445 [2022-11-19 08:09:21,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:09:21,705 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:21,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 30 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:09:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2022-11-19 08:09:21,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 5445. [2022-11-19 08:09:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5445 states, 5118 states have (on average 2.959554513481829) internal successors, (15147), 5444 states have internal predecessors, (15147), 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) [2022-11-19 08:09:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5445 states to 5445 states and 15147 transitions. [2022-11-19 08:09:21,949 INFO L78 Accepts]: Start accepts. Automaton has 5445 states and 15147 transitions. Word has length 6 [2022-11-19 08:09:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:21,949 INFO L495 AbstractCegarLoop]: Abstraction has 5445 states and 15147 transitions. [2022-11-19 08:09:21,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:09:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5445 states and 15147 transitions. [2022-11-19 08:09:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:09:21,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:21,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:09:21,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:09:21,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-19 08:09:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1349535817, now seen corresponding path program 1 times [2022-11-19 08:09:21,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:21,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282358446] [2022-11-19 08:09:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:21,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:21,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:09:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:21,976 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:09:21,977 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:09:21,977 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 31 remaining) [2022-11-19 08:09:21,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 31 remaining) [2022-11-19 08:09:21,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2022-11-19 08:09:21,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2022-11-19 08:09:21,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2022-11-19 08:09:21,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (25 of 31 remaining) [2022-11-19 08:09:21,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (24 of 31 remaining) [2022-11-19 08:09:21,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 31 remaining) [2022-11-19 08:09:21,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2022-11-19 08:09:21,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2022-11-19 08:09:21,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 31 remaining) [2022-11-19 08:09:21,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2022-11-19 08:09:21,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2022-11-19 08:09:21,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-11-19 08:09:21,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-11-19 08:09:21,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2022-11-19 08:09:21,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2022-11-19 08:09:21,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2022-11-19 08:09:21,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-11-19 08:09:21,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2022-11-19 08:09:21,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2022-11-19 08:09:21,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2022-11-19 08:09:21,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2022-11-19 08:09:21,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-11-19 08:09:21,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-11-19 08:09:21,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-11-19 08:09:21,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-11-19 08:09:21,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-11-19 08:09:21,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2022-11-19 08:09:21,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 31 remaining) [2022-11-19 08:09:21,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 31 remaining) [2022-11-19 08:09:21,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:09:21,982 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 08:09:21,986 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-11-19 08:09:21,986 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:09:22,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:09:22 BasicIcfg [2022-11-19 08:09:22,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:09:22,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:09:22,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:09:22,020 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:09:22,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:09:07" (3/4) ... [2022-11-19 08:09:22,022 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 08:09:22,073 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:09:22,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:09:22,074 INFO L158 Benchmark]: Toolchain (without parser) took 15688.34ms. Allocated memory was 100.7MB in the beginning and 249.6MB in the end (delta: 148.9MB). Free memory was 66.2MB in the beginning and 131.4MB in the end (delta: -65.2MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. [2022-11-19 08:09:22,074 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:09:22,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 733.18ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 65.4MB in the end (delta: 608.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 08:09:22,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.38ms. Allocated memory is still 100.7MB. Free memory was 65.4MB in the beginning and 63.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:09:22,075 INFO L158 Benchmark]: Boogie Preprocessor took 55.98ms. Allocated memory is still 100.7MB. Free memory was 63.4MB in the beginning and 61.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:09:22,075 INFO L158 Benchmark]: RCFGBuilder took 700.21ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 61.6MB in the beginning and 100.4MB in the end (delta: -38.8MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2022-11-19 08:09:22,076 INFO L158 Benchmark]: TraceAbstraction took 14053.01ms. Allocated memory was 125.8MB in the beginning and 249.6MB in the end (delta: 123.7MB). Free memory was 101.2MB in the beginning and 133.5MB in the end (delta: -32.2MB). Peak memory consumption was 90.0MB. Max. memory is 16.1GB. [2022-11-19 08:09:22,076 INFO L158 Benchmark]: Witness Printer took 53.56ms. Allocated memory is still 249.6MB. Free memory was 133.5MB in the beginning and 131.4MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 08:09:22,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 733.18ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 65.4MB in the end (delta: 608.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.38ms. Allocated memory is still 100.7MB. Free memory was 65.4MB in the beginning and 63.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.98ms. Allocated memory is still 100.7MB. Free memory was 63.4MB in the beginning and 61.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 700.21ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 61.6MB in the beginning and 100.4MB in the end (delta: -38.8MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 14053.01ms. Allocated memory was 125.8MB in the beginning and 249.6MB in the end (delta: 123.7MB). Free memory was 101.2MB in the beginning and 133.5MB in the end (delta: -32.2MB). Peak memory consumption was 90.0MB. Max. memory is 16.1GB. * Witness Printer took 53.56ms. Allocated memory is still 249.6MB. Free memory was 133.5MB in the beginning and 131.4MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 115 PlacesBefore, 40 PlacesAfterwards, 122 TransitionsBefore, 46 TransitionsAfterwards, 3760 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 113 TotalNumberOfCompositions, 7999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4789, independent: 4589, independent conditional: 0, independent unconditional: 4589, dependent: 200, dependent conditional: 0, dependent unconditional: 200, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2574, independent: 2525, independent conditional: 0, independent unconditional: 2525, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2574, independent: 2432, independent conditional: 0, independent unconditional: 2432, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 142, independent: 93, independent conditional: 0, independent unconditional: 93, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 296, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4789, independent: 2064, independent conditional: 0, independent unconditional: 2064, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 2574, unknown conditional: 0, unknown unconditional: 2574] , Statistics on independence cache: Total cache size (in pairs): 292, Positive cache size: 264, Positive conditional cache size: 0, Positive unconditional cache size: 264, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 152 PlacesBefore, 63 PlacesAfterwards, 163 TransitionsBefore, 73 TransitionsAfterwards, 10800 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 103 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 1 ChoiceCompositions, 152 TotalNumberOfCompositions, 29186 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15262, independent: 14871, independent conditional: 0, independent unconditional: 14871, dependent: 391, dependent conditional: 0, dependent unconditional: 391, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7269, independent: 7200, independent conditional: 0, independent unconditional: 7200, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7269, independent: 6855, independent conditional: 0, independent unconditional: 6855, dependent: 414, dependent conditional: 0, dependent unconditional: 414, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 414, independent: 345, independent conditional: 0, independent unconditional: 345, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 467, independent: 308, independent conditional: 0, independent unconditional: 308, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15262, independent: 7671, independent conditional: 0, independent unconditional: 7671, dependent: 322, dependent conditional: 0, dependent unconditional: 322, unknown: 7269, unknown conditional: 0, unknown unconditional: 7269] , Statistics on independence cache: Total cache size (in pairs): 788, Positive cache size: 749, Positive conditional cache size: 0, Positive unconditional cache size: 749, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, 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: [L698] 0 int *p = &data, *q; [L697] 0 int data = 0; [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L699] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t t_ids[10000]; [L707] 0 int i=0; VAL [__global_lock={4:0}, data={3:0}, i=0, mutex={5:0}, p={40001:-1}, q={0:0}, t_ids={6:0}] [L707] COND TRUE 0 i<10000 [L707] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={4:0}, arg={0:0}, data={3:0}, i=0, mutex={5:0}, p={40001:-1}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-2, q={0:0}, t_ids={6:0}] [L702] 1 \read(*p) - 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: 706]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 707]: 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: -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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 148 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 199 IncrementalHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 18 mSDtfsCounter, 199 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=354occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 183 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 282 IncrementalHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 33 mSDtfsCounter, 282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7553occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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! [2022-11-19 08:09:22,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc63648-e710-4900-a5d7-e11b54d0cd3b/bin/utaipan-I9t0OCRTmS/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)