./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- 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-dbf71c6-m [2022-10-17 16:10:58,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:10:58,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:10:58,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:10:58,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:10:58,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:10:58,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:10:58,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:10:58,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:10:58,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:10:58,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:10:58,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:10:58,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:10:58,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:10:58,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:10:58,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:10:58,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:10:58,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:10:58,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:10:58,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:10:58,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:10:58,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:10:58,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:10:58,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:10:58,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:10:58,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:10:58,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:10:58,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:10:58,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:10:58,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:10:58,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:10:58,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:10:58,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:10:58,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:10:58,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:10:58,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:10:58,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:10:58,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:10:58,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:10:58,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:10:58,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:10:58,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-10-17 16:10:58,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:10:58,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:10:58,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 16:10:58,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 16:10:58,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:10:58,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 16:10:58,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:10:58,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:10:58,549 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 16:10:58,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:10:58,551 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:10:58,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:10:58,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:10:58,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:10:58,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:10:58,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:10:58,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:10:58,560 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:10:58,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:10:58,561 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:10:58,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:10:58,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:10:58,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 16:10:58,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-17 16:10:58,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 16:10:58,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 16:10:58,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:10:58,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:10:58,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:10:58,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 16:10:58,564 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-10-17 16:10:58,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:10:58,564 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 16:10:58,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-17 16:10:58,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:10:58,565 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-10-17 16:10:58,566 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-10-17 16:10:58,566 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_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2022-10-17 16:10:58,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:10:58,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:10:58,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:10:58,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:10:58,944 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:10:58,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2022-10-17 16:10:59,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/data/da8d5c12a/3ae2bc37d3a34a779ca4b27f33ea8533/FLAGc8c8d71f4 [2022-10-17 16:10:59,704 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:10:59,705 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2022-10-17 16:10:59,722 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/data/da8d5c12a/3ae2bc37d3a34a779ca4b27f33ea8533/FLAGc8c8d71f4 [2022-10-17 16:10:59,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/data/da8d5c12a/3ae2bc37d3a34a779ca4b27f33ea8533 [2022-10-17 16:10:59,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:10:59,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:10:59,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:10:59,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:10:59,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:10:59,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:10:59" (1/1) ... [2022-10-17 16:10:59,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0897f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:10:59, skipping insertion in model container [2022-10-17 16:10:59,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:10:59" (1/1) ... [2022-10-17 16:10:59,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:10:59,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:11:00,192 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 16:11:00,499 WARN L230 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_9713e6d3-78f2-4aaa-a06f-12a74200c595/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-10-17 16:11:00,506 WARN L230 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_9713e6d3-78f2-4aaa-a06f-12a74200c595/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-10-17 16:11:00,507 WARN L230 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_9713e6d3-78f2-4aaa-a06f-12a74200c595/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-10-17 16:11:00,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:11:00,527 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:11:00,543 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 16:11:00,578 WARN L230 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_9713e6d3-78f2-4aaa-a06f-12a74200c595/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-10-17 16:11:00,579 WARN L230 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_9713e6d3-78f2-4aaa-a06f-12a74200c595/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-10-17 16:11:00,580 WARN L230 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_9713e6d3-78f2-4aaa-a06f-12a74200c595/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-10-17 16:11:00,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:11:00,660 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:11:00,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00 WrapperNode [2022-10-17 16:11:00,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:11:00,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:11:00,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:11:00,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:11:00,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,770 INFO L138 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2022-10-17 16:11:00,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:11:00,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:11:00,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:11:00,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:11:00,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:11:00,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:11:00,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:11:00,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:11:00,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (1/1) ... [2022-10-17 16:11:00,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 16:11:00,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 [2022-10-17 16:11:00,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 16:11:00,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 16:11:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-10-17 16:11:00,955 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-10-17 16:11:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 16:11:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 16:11:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 16:11:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 16:11:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:11:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:11:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:11:00,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:11:00,972 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 16:11:01,122 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:11:01,124 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:11:01,462 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:11:01,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:11:01,475 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 16:11:01,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:11:01 BoogieIcfgContainer [2022-10-17 16:11:01,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:11:01,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 16:11:01,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 16:11:01,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 16:11:01,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 04:10:59" (1/3) ... [2022-10-17 16:11:01,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d271113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 04:11:01, skipping insertion in model container [2022-10-17 16:11:01,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:11:00" (2/3) ... [2022-10-17 16:11:01,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d271113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 04:11:01, skipping insertion in model container [2022-10-17 16:11:01,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:11:01" (3/3) ... [2022-10-17 16:11:01,491 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-10-17 16:11:01,503 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 16:11:01,516 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 16:11:01,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-10-17 16:11:01,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 16:11:01,656 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-10-17 16:11:01,741 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 16:11:01,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-17 16:11:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 [2022-10-17 16:11:01,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-17 16:11:01,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-17 16:11:01,790 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-17 16:11:01,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == reader_fnThread1of1ForFork0 ======== [2022-10-17 16:11:01,840 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4c9961b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 16:11:01,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 16:11:02,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 16:11:02,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:11:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash -348657922, now seen corresponding path program 1 times [2022-10-17 16:11:02,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 16:11:02,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560967500] [2022-10-17 16:11:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 16:11:02,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:11:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:11:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:11:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 16:11:02,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560967500] [2022-10-17 16:11:02,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560967500] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 16:11:02,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 16:11:02,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 16:11:02,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302564264] [2022-10-17 16:11:02,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 16:11:02,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 16:11:02,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 16:11:02,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 16:11:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 16:11:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 16:11:02,742 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-17 16:11:02,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-10-17 16:11:02,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-17 16:11:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 16:11:02,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 16:11:02,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 16:11:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:11:02,955 INFO L85 PathProgramCache]: Analyzing trace with hash 292971607, now seen corresponding path program 1 times [2022-10-17 16:11:02,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 16:11:02,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376897284] [2022-10-17 16:11:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 16:11:02,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:11:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:11:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:11:05,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 16:11:05,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376897284] [2022-10-17 16:11:05,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376897284] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 16:11:05,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 16:11:05,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-10-17 16:11:05,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928489165] [2022-10-17 16:11:05,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 16:11:05,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 16:11:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 16:11:05,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 16:11:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-10-17 16:11:05,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 16:11:05,119 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-17 16:11:05,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 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) [2022-10-17 16:11:05,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-17 16:11:05,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-17 16:11:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 16:11:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 16:11:07,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 16:11:07,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 16:11:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:11:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1522501454, now seen corresponding path program 1 times [2022-10-17 16:11:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 16:11:07,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381871391] [2022-10-17 16:11:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 16:11:07,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:11:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:11:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:11:12,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 16:11:12,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381871391] [2022-10-17 16:11:12,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381871391] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 16:11:12,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382550860] [2022-10-17 16:11:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 16:11:12,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 16:11:12,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 [2022-10-17 16:11:12,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 16:11:12,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9713e6d3-78f2-4aaa-a06f-12a74200c595/bin/ugemcutter-Zs13ybUbV0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 16:11:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:11:12,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 126 conjunts are in the unsatisfiable core [2022-10-17 16:11:13,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 16:11:13,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 16:11:13,165 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 16:11:13,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-17 16:11:13,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 16:11:13,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-17 16:11:13,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-10-17 16:11:15,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 16:11:15,110 INFO L356 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2022-10-17 16:11:15,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 38 [2022-10-17 16:11:15,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 16:11:15,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 16:11:15,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-10-17 16:11:16,562 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-10-17 16:11:16,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 23 [2022-10-17 16:11:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:11:16,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 16:11:27,641 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~#r~2#1.offset| 20))) (and (forall ((v_ArrVal_60 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_60) |c_ULTIMATE.start_main_~#r~2#1.base|))) (let ((.cse4 (select .cse3 .cse2))) (let ((.cse0 (+ .cse4 1))) (or (< .cse0 0) (= (let ((.cse1 (store .cse3 (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* .cse4 4) 4) 1))) (select (store .cse1 .cse2 (mod (+ (select .cse1 .cse2) 1) 4)) (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* (select .cse1 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) 4))) 1) (= (select .cse3 |c_ULTIMATE.start_main_~#r~2#1.offset|) (mod .cse0 4))))))) (forall ((v_ArrVal_60 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_60) |c_ULTIMATE.start_main_~#r~2#1.base|))) (let ((.cse7 (select .cse6 .cse2))) (let ((.cse8 (select .cse6 |c_ULTIMATE.start_main_~#r~2#1.offset|)) (.cse9 (mod (+ .cse7 1) 4))) (or (= (let ((.cse5 (store .cse6 (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* .cse7 4) 4) 1))) (select (store .cse5 .cse2 (mod (+ (select .cse5 .cse2) 1) 4)) (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* (select .cse5 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) 4))) 1) (= .cse8 .cse9) (= (+ .cse8 4) .cse9)))))) (forall ((v_ArrVal_60 (Array Int Int))) (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_60) |c_ULTIMATE.start_main_~#r~2#1.base|))) (let ((.cse12 (select .cse11 .cse2))) (let ((.cse13 (mod (+ .cse12 1) 4))) (or (= (let ((.cse10 (store .cse11 (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* .cse12 4) 4) 1))) (select (store .cse10 .cse2 (mod (+ (select .cse10 .cse2) 1) 4)) (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* (select .cse10 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) 4))) 1) (= (select .cse11 |c_ULTIMATE.start_main_~#r~2#1.offset|) .cse13) (not (= .cse13 0))))))) (forall ((v_ArrVal_60 (Array Int Int))) (let ((.cse16 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_60) |c_ULTIMATE.start_main_~#r~2#1.base|))) (let ((.cse17 (select .cse16 .cse2))) (let ((.cse14 (+ .cse17 1))) (let ((.cse18 (mod .cse14 4))) (or (not (< .cse14 0)) (= (let ((.cse15 (store .cse16 (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* .cse17 4) 4) 1))) (select (store .cse15 .cse2 (+ (- 4) (mod (+ (select .cse15 .cse2) 1) 4))) (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* (select .cse15 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) 4))) 1) (= .cse18 0) (= (+ (select .cse16 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) .cse18))))))) (forall ((v_ArrVal_60 (Array Int Int))) (let ((.cse20 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_60) |c_ULTIMATE.start_main_~#r~2#1.base|))) (let ((.cse23 (select .cse20 .cse2))) (let ((.cse22 (store .cse20 (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* .cse23 4) 4) 1))) (let ((.cse19 (+ (select .cse22 .cse2) 1)) (.cse21 (mod (+ .cse23 1) 4))) (or (not (< .cse19 0)) (= (select .cse20 |c_ULTIMATE.start_main_~#r~2#1.offset|) .cse21) (= (select (store .cse22 .cse2 (+ (- 4) (mod .cse19 4))) (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* (select .cse22 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) 4)) 1) (not (= .cse21 0)))))))) (forall ((v_ArrVal_60 (Array Int Int))) (let ((.cse29 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_60) |c_ULTIMATE.start_main_~#r~2#1.base|))) (let ((.cse28 (select .cse29 .cse2))) (let ((.cse27 (store .cse29 (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* .cse28 4) 4) 1))) (let ((.cse24 (+ (select .cse27 .cse2) 1)) (.cse25 (select .cse29 |c_ULTIMATE.start_main_~#r~2#1.offset|)) (.cse26 (mod (+ .cse28 1) 4))) (or (not (< .cse24 0)) (= .cse25 .cse26) (= (select (store .cse27 .cse2 (+ (- 4) (mod .cse24 4))) (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* (select .cse27 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) 4)) 1) (= (+ .cse25 4) .cse26))))))) (forall ((v_ArrVal_60 (Array Int Int))) (let ((.cse32 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#reader~0#1.base| v_ArrVal_60) |c_ULTIMATE.start_main_~#r~2#1.base|))) (let ((.cse33 (select .cse32 .cse2))) (let ((.cse30 (+ .cse33 1))) (let ((.cse34 (mod .cse30 4))) (or (not (< .cse30 0)) (= (let ((.cse31 (store .cse32 (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* .cse33 4) 4) 1))) (select (store .cse31 .cse2 (mod (+ (select .cse31 .cse2) 1) 4)) (+ |c_ULTIMATE.start_main_~#r~2#1.offset| (* (select .cse31 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) 4))) 1) (= .cse34 0) (= (+ (select .cse32 |c_ULTIMATE.start_main_~#r~2#1.offset|) 4) .cse34))))))))) is different from false