./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- 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-5e519f3 [2022-11-03 03:27:49,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:27:49,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:27:49,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:27:49,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:27:49,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:27:49,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:27:49,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:27:49,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:27:49,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:27:49,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:27:49,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:27:49,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:27:49,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:27:49,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:27:49,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:27:49,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:27:49,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:27:49,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:27:49,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:27:49,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:27:49,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:27:49,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:27:49,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:27:49,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:27:49,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:27:49,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:27:49,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:27:49,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:27:49,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:27:49,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:27:49,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:27:49,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:27:49,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:27:49,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:27:49,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:27:49,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:27:49,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:27:49,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:27:49,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:27:49,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:27:49,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 03:27:49,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:27:49,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:27:49,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:27:49,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:27:49,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:27:49,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:27:49,508 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:27:49,509 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:27:49,509 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:27:49,509 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:27:49,510 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:27:49,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:27:49,511 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:27:49,511 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:27:49,511 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:27:49,511 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:27:49,511 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:27:49,512 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:27:49,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:27:49,513 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:27:49,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:27:49,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:27:49,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:27:49,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:27:49,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:27:49,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:27:49,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:27:49,514 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 03:27:49,514 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:27:49,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:27:49,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:27:49,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:27:49,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:27:49,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:27:49,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:49,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:27:49,516 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:27:49,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:27:49,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:27:49,517 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:27:49,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:27:49,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:27:49,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:27:49,518 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_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-11-03 03:27:49,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:27:49,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:27:49,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:27:49,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:27:49,893 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:27:49,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-11-03 03:27:49,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/data/c9e69d30a/e1f8d3d82e694b75bc4699ea66c7fb83/FLAG2d7dfe6e8 [2022-11-03 03:27:50,491 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:27:50,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-11-03 03:27:50,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/data/c9e69d30a/e1f8d3d82e694b75bc4699ea66c7fb83/FLAG2d7dfe6e8 [2022-11-03 03:27:50,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/data/c9e69d30a/e1f8d3d82e694b75bc4699ea66c7fb83 [2022-11-03 03:27:50,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:27:50,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:27:50,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:27:50,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:27:50,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:27:50,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:27:50" (1/1) ... [2022-11-03 03:27:50,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b7dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:50, skipping insertion in model container [2022-11-03 03:27:50,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:27:50" (1/1) ... [2022-11-03 03:27:50,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:27:50,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:27:51,128 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_f87fc16b-be98-4ecb-9d75-68c55490b9d8/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-11-03 03:27:51,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:27:51,144 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:27:51,179 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_f87fc16b-be98-4ecb-9d75-68c55490b9d8/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-11-03 03:27:51,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:27:51,199 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:27:51,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51 WrapperNode [2022-11-03 03:27:51,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:27:51,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:27:51,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:27:51,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:27:51,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,254 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 357 [2022-11-03 03:27:51,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:27:51,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:27:51,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:27:51,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:27:51,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,294 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:27:51,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:27:51,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:27:51,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:27:51,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (1/1) ... [2022-11-03 03:27:51,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:27:51,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:27:51,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:27:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:27:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:27:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:27:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:27:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 03:27:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 03:27:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 03:27:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 03:27:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 03:27:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 03:27:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-03 03:27:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-03 03:27:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:27:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-03 03:27:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-03 03:27:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-03 03:27:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-03 03:27:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 03:27:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 03:27:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:27:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:27:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:27:51,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:27:51,399 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 03:27:51,522 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:27:51,524 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:27:52,194 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:27:52,835 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:27:52,835 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 03:27:52,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:27:52 BoogieIcfgContainer [2022-11-03 03:27:52,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:27:52,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:27:52,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:27:52,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:27:52,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:27:50" (1/3) ... [2022-11-03 03:27:52,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a37be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:27:52, skipping insertion in model container [2022-11-03 03:27:52,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:51" (2/3) ... [2022-11-03 03:27:52,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a37be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:27:52, skipping insertion in model container [2022-11-03 03:27:52,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:27:52" (3/3) ... [2022-11-03 03:27:52,862 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-11-03 03:27:52,873 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 03:27:52,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:27:52,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-03 03:27:52,883 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 03:27:53,222 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-03 03:27:53,277 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:27:53,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 299 transitions, 670 flow [2022-11-03 03:27:53,299 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 299 transitions, 670 flow [2022-11-03 03:27:53,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 299 transitions, 670 flow [2022-11-03 03:27:53,484 INFO L130 PetriNetUnfolder]: 18/271 cut-off events. [2022-11-03 03:27:53,485 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-03 03:27:53,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 271 events. 18/271 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 495 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 232. Up to 3 conditions per place. [2022-11-03 03:27:53,505 INFO L118 LiptonReduction]: Number of co-enabled transitions 12848 [2022-11-03 03:28:14,378 INFO L133 LiptonReduction]: Checked pairs total: 64527 [2022-11-03 03:28:14,379 INFO L135 LiptonReduction]: Total number of compositions: 270 [2022-11-03 03:28:14,387 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 117 transitions, 306 flow [2022-11-03 03:28:25,168 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 218283 states, 211719 states have (on average 5.393753040586816) internal successors, (1141960), 218282 states have internal predecessors, (1141960), 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) [2022-11-03 03:28:25,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:28:25,203 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=FINITE_AUTOMATA, 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;@230d3d91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:28:25,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-11-03 03:28:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 218283 states, 211719 states have (on average 5.393753040586816) internal successors, (1141960), 218282 states have internal predecessors, (1141960), 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) [2022-11-03 03:28:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-03 03:28:25,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:25,553 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-03 03:28:25,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2022-11-03 03:28:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1765, now seen corresponding path program 1 times [2022-11-03 03:28:25,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:25,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887162313] [2022-11-03 03:28:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:25,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:25,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887162313] [2022-11-03 03:28:25,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887162313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:25,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:25,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-03 03:28:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334296900] [2022-11-03 03:28:25,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:25,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:28:25,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:28:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:28:26,869 INFO L87 Difference]: Start difference. First operand has 218283 states, 211719 states have (on average 5.393753040586816) internal successors, (1141960), 218282 states have internal predecessors, (1141960), 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) [2022-11-03 03:28:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:30,071 INFO L93 Difference]: Finished difference Result 111685 states and 577142 transitions. [2022-11-03 03:28:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:28:30,100 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 1 [2022-11-03 03:28:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:31,547 INFO L225 Difference]: With dead ends: 111685 [2022-11-03 03:28:31,548 INFO L226 Difference]: Without dead ends: 111685 [2022-11-03 03:28:31,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:28:31,551 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:31,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:28:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111685 states. [2022-11-03 03:28:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111685 to 111685. [2022-11-03 03:28:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111685 states, 109283 states have (on average 5.281169074787479) internal successors, (577142), 111684 states have internal predecessors, (577142), 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) [2022-11-03 03:28:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111685 states to 111685 states and 577142 transitions. [2022-11-03 03:28:39,816 INFO L78 Accepts]: Start accepts. Automaton has 111685 states and 577142 transitions. Word has length 1 [2022-11-03 03:28:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:39,818 INFO L495 AbstractCegarLoop]: Abstraction has 111685 states and 577142 transitions. [2022-11-03 03:28:39,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-03 03:28:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 111685 states and 577142 transitions. [2022-11-03 03:28:39,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 03:28:39,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:39,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 03:28:39,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:28:39,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2022-11-03 03:28:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:39,830 INFO L85 PathProgramCache]: Analyzing trace with hash 56521, now seen corresponding path program 1 times [2022-11-03 03:28:39,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:39,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735323361] [2022-11-03 03:28:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:40,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:40,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735323361] [2022-11-03 03:28:40,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735323361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:40,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:40,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 03:28:40,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831577085] [2022-11-03 03:28:40,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:40,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:28:40,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:28:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:40,074 INFO L87 Difference]: Start difference. First operand 111685 states and 577142 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:44,580 INFO L93 Difference]: Finished difference Result 223367 states and 1154281 transitions. [2022-11-03 03:28:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:28:44,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-03 03:28:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:47,916 INFO L225 Difference]: With dead ends: 223367 [2022-11-03 03:28:47,917 INFO L226 Difference]: Without dead ends: 223367 [2022-11-03 03:28:47,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:28:47,919 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 85 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:47,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 40 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:28:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223367 states. [2022-11-03 03:28:54,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223367 to 111686. [2022-11-03 03:28:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111686 states, 109284 states have (on average 5.281139050547198) internal successors, (577144), 111685 states have internal predecessors, (577144), 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) [2022-11-03 03:28:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111686 states to 111686 states and 577144 transitions. [2022-11-03 03:28:56,514 INFO L78 Accepts]: Start accepts. Automaton has 111686 states and 577144 transitions. Word has length 2 [2022-11-03 03:28:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:56,514 INFO L495 AbstractCegarLoop]: Abstraction has 111686 states and 577144 transitions. [2022-11-03 03:28:56,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 111686 states and 577144 transitions. [2022-11-03 03:28:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 03:28:56,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:56,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 03:28:56,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:28:56,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2022-11-03 03:28:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1753833, now seen corresponding path program 1 times [2022-11-03 03:28:56,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:56,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250890170] [2022-11-03 03:28:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:56,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:56,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:56,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250890170] [2022-11-03 03:28:56,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250890170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:56,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321462059] [2022-11-03 03:28:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:56,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:56,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:56,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:56,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87fc16b-be98-4ecb-9d75-68c55490b9d8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:28:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:56,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:28:56,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:56,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:28:56,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321462059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:56,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:28:56,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-03 03:28:56,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694759710] [2022-11-03 03:28:56,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:56,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:28:56,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:56,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:28:56,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:28:56,953 INFO L87 Difference]: Start difference. First operand 111686 states and 577144 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-03 03:29:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:01,284 INFO L93 Difference]: Finished difference Result 223366 states and 1154280 transitions. [2022-11-03 03:29:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:29:01,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-03 03:29:01,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted.