./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 4e7fbc69 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_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/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_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 13:54:41,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:54:41,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:54:41,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:54:41,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:54:41,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:54:41,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:54:41,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:54:41,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:54:41,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:54:41,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:54:41,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:54:41,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:54:41,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:54:41,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:54:41,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:54:41,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:54:41,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:54:41,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:54:41,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:54:41,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:54:41,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:54:41,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:54:41,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:54:41,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:54:41,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:54:41,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:54:41,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:54:41,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:54:41,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:54:41,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:54:41,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:54:41,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:54:41,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:54:41,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:54:41,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:54:41,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:54:41,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:54:41,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:54:41,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:54:41,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:54:41,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 13:54:41,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:54:41,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:54:41,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:54:41,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:54:41,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:54:41,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:54:41,566 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:54:41,566 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:54:41,566 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:54:41,566 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:54:41,567 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:54:41,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:54:41,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:54:41,568 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:54:41,568 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:54:41,568 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:54:41,569 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:54:41,569 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:54:41,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:54:41,570 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:54:41,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:54:41,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:54:41,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:54:41,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:54:41,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:54:41,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:54:41,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:54:41,571 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:54:41,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:54:41,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:54:41,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:54:41,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:54:41,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:54:41,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:54:41,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:54:41,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:54:41,573 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:54:41,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:54:41,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:54:41,574 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:54:41,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:54:41,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:54:41,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:54:41,587 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_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-11-23 13:54:41,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:54:41,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:54:41,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:54:41,941 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:54:41,942 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:54:41,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-11-23 13:54:45,043 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:54:45,271 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:54:45,272 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-11-23 13:54:45,280 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/data/960b7e57a/c4c35f832ac94f22927bc8de8fe7eda0/FLAGe5ec75ef1 [2022-11-23 13:54:45,295 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/data/960b7e57a/c4c35f832ac94f22927bc8de8fe7eda0 [2022-11-23 13:54:45,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:54:45,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:54:45,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:54:45,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:54:45,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:54:45,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2a18fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45, skipping insertion in model container [2022-11-23 13:54:45,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:54:45,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:54:45,530 WARN L237 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_05cd8921-9b0c-440b-afcf-9aae42c03dd8/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-11-23 13:54:45,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:54:45,550 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:54:45,591 WARN L237 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_05cd8921-9b0c-440b-afcf-9aae42c03dd8/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-11-23 13:54:45,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:54:45,612 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:54:45,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45 WrapperNode [2022-11-23 13:54:45,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:54:45,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:54:45,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:54:45,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:54:45,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,682 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 357 [2022-11-23 13:54:45,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:54:45,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:54:45,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:54:45,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:54:45,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:54:45,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:54:45,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:54:45,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:54:45,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (1/1) ... [2022-11-23 13:54:45,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:54:45,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:54:45,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:54:45,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:54:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:54:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:54:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:54:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:54:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 13:54:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 13:54:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 13:54:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 13:54:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 13:54:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 13:54:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-23 13:54:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-23 13:54:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:54:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-23 13:54:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-23 13:54:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-23 13:54:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-23 13:54:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 13:54:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 13:54:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:54:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:54:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:54:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:54:45,877 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 13:54:46,103 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:54:46,106 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:54:47,078 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:54:47,655 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:54:47,655 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-23 13:54:47,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:47 BoogieIcfgContainer [2022-11-23 13:54:47,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:54:47,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:54:47,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:54:47,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:54:47,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:54:45" (1/3) ... [2022-11-23 13:54:47,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6830baee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:54:47, skipping insertion in model container [2022-11-23 13:54:47,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:45" (2/3) ... [2022-11-23 13:54:47,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6830baee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:54:47, skipping insertion in model container [2022-11-23 13:54:47,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:47" (3/3) ... [2022-11-23 13:54:47,675 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-11-23 13:54:47,687 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 13:54:47,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:54:47,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-23 13:54:47,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 13:54:48,038 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-23 13:54:48,086 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:54:48,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 299 transitions, 670 flow [2022-11-23 13:54:48,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 299 transitions, 670 flow [2022-11-23 13:54:48,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 299 transitions, 670 flow [2022-11-23 13:54:48,273 INFO L130 PetriNetUnfolder]: 18/271 cut-off events. [2022-11-23 13:54:48,273 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 13:54:48,286 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 487 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. [2022-11-23 13:54:48,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 12848 [2022-11-23 13:55:07,960 INFO L134 LiptonReduction]: Checked pairs total: 71841 [2022-11-23 13:55:07,961 INFO L136 LiptonReduction]: Total number of compositions: 258 [2022-11-23 13:55:07,969 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 117 transitions, 306 flow [2022-11-23 13:55:17,886 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) [2022-11-23 13:55:17,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:55:17,933 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;@73dfaa25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:55:17,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-11-23 13:55:18,275 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) [2022-11-23 13:55:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-23 13:55:18,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:18,281 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-23 13:55:18,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2022-11-23 13:55:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1754, now seen corresponding path program 1 times [2022-11-23 13:55:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:18,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511349100] [2022-11-23 13:55:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:18,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:55:18,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:18,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511349100] [2022-11-23 13:55:18,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511349100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:18,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:18,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 13:55:18,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373126114] [2022-11-23 13:55:18,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:18,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:55:18,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:55:18,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:55:18,927 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) [2022-11-23 13:55:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:22,254 INFO L93 Difference]: Finished difference Result 111685 states and 577142 transitions. [2022-11-23 13:55:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:55:22,261 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 [2022-11-23 13:55:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:24,356 INFO L225 Difference]: With dead ends: 111685 [2022-11-23 13:55:24,357 INFO L226 Difference]: Without dead ends: 111685 [2022-11-23 13:55:24,358 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 [2022-11-23 13:55:24,363 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 [2022-11-23 13:55:24,364 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] [2022-11-23 13:55:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111685 states. [2022-11-23 13:55:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111685 to 111685. [2022-11-23 13:55:30,337 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) [2022-11-23 13:55:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111685 states to 111685 states and 577142 transitions. [2022-11-23 13:55:31,996 INFO L78 Accepts]: Start accepts. Automaton has 111685 states and 577142 transitions. Word has length 1 [2022-11-23 13:55:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:31,998 INFO L495 AbstractCegarLoop]: Abstraction has 111685 states and 577142 transitions. [2022-11-23 13:55:32,003 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) [2022-11-23 13:55:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 111685 states and 577142 transitions. [2022-11-23 13:55:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 13:55:32,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:32,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 13:55:32,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:55:32,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2022-11-23 13:55:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 56099, now seen corresponding path program 1 times [2022-11-23 13:55:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:32,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142442217] [2022-11-23 13:55:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:32,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:55:32,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:32,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142442217] [2022-11-23 13:55:32,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142442217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:32,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:32,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:55:32,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262812483] [2022-11-23 13:55:32,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:32,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:32,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:32,304 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) [2022-11-23 13:55:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:36,717 INFO L93 Difference]: Finished difference Result 223367 states and 1154281 transitions. [2022-11-23 13:55:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:36,718 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 [2022-11-23 13:55:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:39,910 INFO L225 Difference]: With dead ends: 223367 [2022-11-23 13:55:39,910 INFO L226 Difference]: Without dead ends: 223367 [2022-11-23 13:55:39,911 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 [2022-11-23 13:55:39,913 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 85 mSDsluCounter, 20 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 [2022-11-23 13:55:39,913 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] [2022-11-23 13:55:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223367 states. [2022-11-23 13:55:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223367 to 111686. [2022-11-23 13:55:47,055 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) [2022-11-23 13:55:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111686 states to 111686 states and 577144 transitions. [2022-11-23 13:55:48,899 INFO L78 Accepts]: Start accepts. Automaton has 111686 states and 577144 transitions. Word has length 2 [2022-11-23 13:55:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:48,900 INFO L495 AbstractCegarLoop]: Abstraction has 111686 states and 577144 transitions. [2022-11-23 13:55:48,900 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) [2022-11-23 13:55:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 111686 states and 577144 transitions. [2022-11-23 13:55:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 13:55:48,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:48,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 13:55:48,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:55:48,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2022-11-23 13:55:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1740732, now seen corresponding path program 1 times [2022-11-23 13:55:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:48,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090368761] [2022-11-23 13:55:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:55:49,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090368761] [2022-11-23 13:55:49,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090368761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:55:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076599816] [2022-11-23 13:55:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:49,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:49,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:49,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:49,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cd8921-9b0c-440b-afcf-9aae42c03dd8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:55:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:49,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 13:55:49,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:55:49,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:55:49,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076599816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:49,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:55:49,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 13:55:49,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422520735] [2022-11-23 13:55:49,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:49,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:55:49,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:55:49,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:55:49,327 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) [2022-11-23 13:55:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:53,446 INFO L93 Difference]: Finished difference Result 223366 states and 1154280 transitions. [2022-11-23 13:55:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:55:53,446 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 [2022-11-23 13:55:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted.