./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cbe8dd40fecf4391efe5e4ba3939c64a9fdbbfb53083def47a68bbefda43a3c --- 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 [2022-11-18 18:32:52,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:32:52,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:32:52,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:32:52,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:32:52,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:32:52,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:32:52,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:32:52,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:32:52,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:32:52,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:32:52,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:32:52,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:32:52,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:32:52,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:32:52,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:32:52,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:32:52,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:32:52,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:32:52,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:32:52,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:32:52,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:32:52,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:32:52,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:32:52,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:32:52,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:32:52,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:32:52,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:32:52,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:32:52,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:32:52,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:32:52,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:32:52,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:32:52,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:32:52,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:32:52,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:32:52,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:32:52,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:32:52,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:32:52,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:32:52,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:32:52,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 18:32:52,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:32:52,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:32:52,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:32:52,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:32:52,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:32:52,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:32:52,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:32:52,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:32:52,247 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:32:52,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:32:52,248 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:32:52,248 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:32:52,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:32:52,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:32:52,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:32:52,249 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 18:32:52,249 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 18:32:52,250 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 18:32:52,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:32:52,250 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:32:52,250 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:32:52,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:32:52,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:32:52,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:32:52,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:32:52,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:32:52,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:32:52,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:32:52,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:32:52,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:32:52,252 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_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cbe8dd40fecf4391efe5e4ba3939c64a9fdbbfb53083def47a68bbefda43a3c [2022-11-18 18:32:52,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:32:52,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:32:52,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:32:52,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:32:52,600 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:32:52,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2022-11-18 18:32:52,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/data/624835843/bdf416e56ce54d26b81c61eb2f7f5ca3/FLAG68e393dc6 [2022-11-18 18:32:53,212 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:32:53,213 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2022-11-18 18:32:53,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/data/624835843/bdf416e56ce54d26b81c61eb2f7f5ca3/FLAG68e393dc6 [2022-11-18 18:32:53,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/data/624835843/bdf416e56ce54d26b81c61eb2f7f5ca3 [2022-11-18 18:32:53,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:32:53,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:32:53,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:32:53,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:32:53,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:32:53,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a408c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53, skipping insertion in model container [2022-11-18 18:32:53,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:32:53,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:32:53,840 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_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c[5938,5951] [2022-11-18 18:32:53,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:32:53,854 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:32:53,888 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_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c[5938,5951] [2022-11-18 18:32:53,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:32:53,905 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:32:53,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53 WrapperNode [2022-11-18 18:32:53,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:32:53,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:32:53,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:32:53,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:32:53,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,968 INFO L138 Inliner]: procedures = 25, calls = 120, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 248 [2022-11-18 18:32:53,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:32:53,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:32:53,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:32:53,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:32:53,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:53,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:54,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:54,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:32:54,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:32:54,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:32:54,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:32:54,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (1/1) ... [2022-11-18 18:32:54,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:32:54,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:54,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:32:54,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcac5c-deef-4d29-b5e5-35b7020b48fa/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:32:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:32:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:32:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:32:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:32:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:32:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:32:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:32:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:32:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:32:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:32:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 18:32:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 18:32:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:32:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-18 18:32:54,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-18 18:32:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-18 18:32:54,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-18 18:32:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:32:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:32:54,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:32:54,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:32:54,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:32:54,111 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:32:54,269 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:32:54,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:32:54,740 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:32:54,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:32:54,846 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:32:54,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:54 BoogieIcfgContainer [2022-11-18 18:32:54,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:32:54,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:32:54,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:32:54,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:32:54,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:32:53" (1/3) ... [2022-11-18 18:32:54,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e86e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:54, skipping insertion in model container [2022-11-18 18:32:54,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:53" (2/3) ... [2022-11-18 18:32:54,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e86e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:54, skipping insertion in model container [2022-11-18 18:32:54,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:54" (3/3) ... [2022-11-18 18:32:54,859 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2022-11-18 18:32:54,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:32:54,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-18 18:32:54,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:32:55,009 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-18 18:32:55,073 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 18:32:55,094 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 284 transitions, 640 flow [2022-11-18 18:32:55,096 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 284 transitions, 640 flow [2022-11-18 18:32:55,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 284 transitions, 640 flow [2022-11-18 18:32:55,207 INFO L130 PetriNetUnfolder]: 14/252 cut-off events. [2022-11-18 18:32:55,207 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:32:55,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 252 events. 14/252 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 489 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 208. Up to 3 conditions per place. [2022-11-18 18:32:55,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 14400 [2022-11-18 18:33:01,517 INFO L134 LiptonReduction]: Checked pairs total: 103008 [2022-11-18 18:33:01,517 INFO L136 LiptonReduction]: Total number of compositions: 194 [2022-11-18 18:33:01,526 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 144 places, 133 transitions, 338 flow [2022-11-18 18:33:38,875 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 761257 states, 760975 states have (on average 5.84700154407175) internal successors, (4449422), 761256 states have internal predecessors, (4449422), 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) [2022-11-18 18:33:38,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:33:38,949 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;@5e64254, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:33:38,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2022-11-18 18:33:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 761257 states, 760975 states have (on average 5.84700154407175) internal successors, (4449422), 761256 states have internal predecessors, (4449422), 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) [2022-11-18 18:33:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-18 18:33:40,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:40,388 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-18 18:33:40,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-18 18:33:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:40,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1076, now seen corresponding path program 1 times [2022-11-18 18:33:40,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:40,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480206880] [2022-11-18 18:33:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:40,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:40,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:40,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480206880] [2022-11-18 18:33:40,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480206880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:40,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:40,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-18 18:33:40,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910545206] [2022-11-18 18:33:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:40,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:33:40,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:40,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:33:40,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:33:42,120 INFO L87 Difference]: Start difference. First operand has 761257 states, 760975 states have (on average 5.84700154407175) internal successors, (4449422), 761256 states have internal predecessors, (4449422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)