./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 527bcce2 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_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf --witnessprinter.witness.filename witness --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a690a19e2d41bbc14b3960c21812e80405a4291ef4154c7125f66fa1ebbf9c8f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 17:19:57,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:19:57,106 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-21 17:19:57,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:19:57,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:19:57,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:19:57,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:19:57,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:19:57,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:19:57,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:19:57,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:19:57,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:19:57,145 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:19:57,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:19:57,146 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:19:57,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:19:57,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:19:57,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:19:57,148 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 17:19:57,149 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 17:19:57,149 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 17:19:57,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:19:57,150 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 17:19:57,151 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 17:19:57,151 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:19:57,152 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:19:57,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:19:57,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:19:57,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:19:57,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:19:57,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:19:57,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:19:57,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:19:57,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 17:19:57,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 17:19:57,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:19:57,157 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-21 17:19:57,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:19:57,157 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:19:57,158 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:19:57,158 INFO L153 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_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a690a19e2d41bbc14b3960c21812e80405a4291ef4154c7125f66fa1ebbf9c8f [2023-11-21 17:19:57,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:19:57,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:19:57,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:19:57,490 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:19:57,491 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:19:57,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/../../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2023-11-21 17:20:00,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:20:01,035 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:20:01,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2023-11-21 17:20:01,046 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/data/9911ba37b/0eb1f852258b42f89291224417e7633a/FLAG8652a56df [2023-11-21 17:20:01,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/data/9911ba37b/0eb1f852258b42f89291224417e7633a [2023-11-21 17:20:01,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:20:01,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:20:01,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:20:01,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:20:01,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:20:01,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d355eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01, skipping insertion in model container [2023-11-21 17:20:01,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,125 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:20:01,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:20:01,440 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 17:20:01,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:20:01,529 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:20:01,532 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:20:01,542 INFO L206 MainTranslator]: Completed translation [2023-11-21 17:20:01,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01 WrapperNode [2023-11-21 17:20:01,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:20:01,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 17:20:01,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 17:20:01,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 17:20:01,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,599 INFO L138 Inliner]: procedures = 25, calls = 121, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 273 [2023-11-21 17:20:01,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 17:20:01,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 17:20:01,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 17:20:01,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 17:20:01,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 17:20:01,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 17:20:01,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 17:20:01,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 17:20:01,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (1/1) ... [2023-11-21 17:20:01,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:20:01,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:20:01,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 17:20:01,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 17:20:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 17:20:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 17:20:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 17:20:01,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 17:20:01,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 17:20:01,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 17:20:01,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 17:20:01,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 17:20:01,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 17:20:01,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 17:20:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-21 17:20:01,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-21 17:20:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 17:20:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-21 17:20:01,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-21 17:20:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-21 17:20:01,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-21 17:20:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 17:20:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 17:20:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 17:20:01,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 17:20:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 17:20:01,791 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 17:20:01,998 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 17:20:02,004 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 17:20:02,582 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 17:20:03,001 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 17:20:03,001 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 17:20:03,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:03 BoogieIcfgContainer [2023-11-21 17:20:03,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 17:20:03,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 17:20:03,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 17:20:03,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 17:20:03,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:20:01" (1/3) ... [2023-11-21 17:20:03,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51335c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:03, skipping insertion in model container [2023-11-21 17:20:03,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:01" (2/3) ... [2023-11-21 17:20:03,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51335c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:03, skipping insertion in model container [2023-11-21 17:20:03,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:03" (3/3) ... [2023-11-21 17:20:03,022 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2023-11-21 17:20:03,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 17:20:03,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-21 17:20:03,045 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 17:20:03,213 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-21 17:20:03,280 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:20:03,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 17:20:03,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:20:03,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 17:20:03,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae2fcce-f514-4755-9389-69459c99883e/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 17:20:03,355 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 17:20:03,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread4Thread1of1ForFork5 ======== [2023-11-21 17:20:03,376 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=PARTIAL_ORDER_FA, 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;@3dbeaddd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:20:03,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-21 17:20:04,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread4Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread4Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-21 17:20:04,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash 542354190, now seen corresponding path program 1 times [2023-11-21 17:20:04,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:20:04,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672033673] [2023-11-21 17:20:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:04,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:20:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:20:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672033673] [2023-11-21 17:20:05,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672033673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:20:05,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:20:05,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 17:20:05,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080482150] [2023-11-21 17:20:05,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:20:05,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 17:20:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:20:05,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 17:20:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 17:20:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:05,239 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:05,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-11-21 17:20:05,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:05,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 17:20:05,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread4Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread4Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-21 17:20:05,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:20:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash 542354191, now seen corresponding path program 1 times [2023-11-21 17:20:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:20:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596349448] [2023-11-21 17:20:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:20:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:20:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:20:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:20:06,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:20:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596349448] [2023-11-21 17:20:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596349448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:20:06,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:20:06,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 17:20:06,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270520844] [2023-11-21 17:20:06,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:20:06,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 17:20:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:20:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 17:20:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-21 17:20:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:20:06,324 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:20:06,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-11-21 17:20:06,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:20:06,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.