./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba --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 e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f --- 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-b5237d8 [2022-11-22 00:22:32,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:22:32,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:22:32,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:22:32,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:22:32,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:22:32,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:22:32,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:22:32,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:22:32,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:22:32,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:22:32,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:22:32,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:22:32,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:22:32,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:22:32,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:22:32,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:22:32,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:22:32,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:22:32,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:22:32,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:22:32,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:22:32,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:22:32,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:22:32,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:22:32,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:22:32,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:22:32,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:22:32,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:22:32,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:22:32,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:22:32,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:22:32,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:22:32,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:22:32,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:22:32,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:22:32,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:22:32,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:22:32,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:22:32,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:22:32,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:22:32,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:22:32,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:22:32,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:22:32,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:22:32,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:22:32,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:22:32,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:22:32,291 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:22:32,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:22:32,292 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:22:32,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:22:32,293 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:22:32,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:22:32,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:22:32,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:22:32,294 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:22:32,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:22:32,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:22:32,295 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:22:32,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:22:32,296 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:22:32,296 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:22:32,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:22:32,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:22:32,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:22:32,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:22:32,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:22:32,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:22:32,298 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:22:32,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:22:32,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:22:32,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:22:32,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:22:32,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:22:32,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:22:32,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:22:32,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:22:32,300 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:22:32,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:22:32,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:22:32,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:22:32,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:22:32,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:22:32,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:22:32,302 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_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f [2022-11-22 00:22:32,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:22:32,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:22:32,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:22:32,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:22:32,671 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:22:32,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i [2022-11-22 00:22:36,212 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:22:36,537 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:22:36,537 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i [2022-11-22 00:22:36,553 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/data/08879234c/4fc0b492c38d4a9e86c32eba534c3071/FLAG5562fb352 [2022-11-22 00:22:36,580 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/data/08879234c/4fc0b492c38d4a9e86c32eba534c3071 [2022-11-22 00:22:36,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:22:36,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:22:36,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:22:36,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:22:36,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:22:36,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:22:36" (1/1) ... [2022-11-22 00:22:36,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d996bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:36, skipping insertion in model container [2022-11-22 00:22:36,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:22:36" (1/1) ... [2022-11-22 00:22:36,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:22:36,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:22:37,169 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_4814399f-da3f-4863-89cd-a19ed57401e6/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2022-11-22 00:22:37,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:22:37,207 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:22:37,280 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_4814399f-da3f-4863-89cd-a19ed57401e6/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2022-11-22 00:22:37,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:22:37,338 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:22:37,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37 WrapperNode [2022-11-22 00:22:37,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:22:37,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:22:37,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:22:37,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:22:37,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,436 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 197 [2022-11-22 00:22:37,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:22:37,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:22:37,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:22:37,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:22:37,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,512 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:22:37,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:22:37,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:22:37,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:22:37,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (1/1) ... [2022-11-22 00:22:37,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:22:37,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:22:37,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:22:37,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4814399f-da3f-4863-89cd-a19ed57401e6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:22:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:22:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-22 00:22:37,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-22 00:22:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:22:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:22:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:22:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:22:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:22:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:22:37,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:22:37,630 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 00:22:37,895 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:22:37,904 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:22:38,357 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:22:38,661 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:22:38,661 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 00:22:38,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:22:38 BoogieIcfgContainer [2022-11-22 00:22:38,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:22:38,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:22:38,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:22:38,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:22:38,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:22:36" (1/3) ... [2022-11-22 00:22:38,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61551190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:22:38, skipping insertion in model container [2022-11-22 00:22:38,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:37" (2/3) ... [2022-11-22 00:22:38,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61551190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:22:38, skipping insertion in model container [2022-11-22 00:22:38,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:22:38" (3/3) ... [2022-11-22 00:22:38,676 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2022-11-22 00:22:38,686 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 00:22:38,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:22:38,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-22 00:22:38,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 00:22:38,828 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 00:22:38,891 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:22:38,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 143 transitions, 291 flow [2022-11-22 00:22:38,911 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 143 transitions, 291 flow [2022-11-22 00:22:38,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 143 transitions, 291 flow [2022-11-22 00:22:38,994 INFO L130 PetriNetUnfolder]: 11/154 cut-off events. [2022-11-22 00:22:38,994 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 00:22:39,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 154 events. 11/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-11-22 00:22:39,005 INFO L119 LiptonReduction]: Number of co-enabled transitions 2884 [2022-11-22 00:22:48,618 INFO L134 LiptonReduction]: Checked pairs total: 3576 [2022-11-22 00:22:48,618 INFO L136 LiptonReduction]: Total number of compositions: 162 [2022-11-22 00:22:48,632 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 32 transitions, 69 flow [2022-11-22 00:22:48,654 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 107 states, 86 states have (on average 2.488372093023256) internal successors, (214), 106 states have internal predecessors, (214), 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) [2022-11-22 00:22:48,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:22:48,682 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;@1aa11ad8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:22:48,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-22 00:22:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 86 states have (on average 2.488372093023256) internal successors, (214), 106 states have internal predecessors, (214), 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) [2022-11-22 00:22:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:22:48,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:48,691 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 00:22:48,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-22 00:22:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash 716780554, now seen corresponding path program 1 times [2022-11-22 00:22:48,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:48,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363223222] [2022-11-22 00:22:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:48,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:22:48,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:22:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:22:48,871 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:22:48,873 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:22:48,875 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-22 00:22:48,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-22 00:22:48,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-22 00:22:48,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-22 00:22:48,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-22 00:22:48,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-22 00:22:48,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-22 00:22:48,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-22 00:22:48,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-22 00:22:48,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-22 00:22:48,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-22 00:22:48,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-22 00:22:48,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-22 00:22:48,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-22 00:22:48,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-22 00:22:48,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-22 00:22:48,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-22 00:22:48,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-22 00:22:48,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-22 00:22:48,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-22 00:22:48,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-22 00:22:48,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:22:48,888 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 00:22:48,891 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 00:22:48,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-22 00:22:48,955 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 00:22:48,960 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:22:48,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 247 transitions, 506 flow [2022-11-22 00:22:48,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 247 transitions, 506 flow [2022-11-22 00:22:48,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 247 transitions, 506 flow [2022-11-22 00:22:49,057 INFO L130 PetriNetUnfolder]: 21/271 cut-off events. [2022-11-22 00:22:49,085 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 00:22:49,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 271 events. 21/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 588 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 219. Up to 6 conditions per place. [2022-11-22 00:22:49,107 INFO L119 LiptonReduction]: Number of co-enabled transitions 27192 [2022-11-22 00:23:00,548 INFO L134 LiptonReduction]: Checked pairs total: 63517 [2022-11-22 00:23:00,548 INFO L136 LiptonReduction]: Total number of compositions: 239 [2022-11-22 00:23:00,550 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 91 transitions, 194 flow [2022-11-22 00:23:00,878 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7741 states, 7490 states have (on average 3.2524699599465956) internal successors, (24361), 7740 states have internal predecessors, (24361), 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) [2022-11-22 00:23:00,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:23:00,884 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;@1aa11ad8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:23:00,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-22 00:23:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 7741 states, 7490 states have (on average 3.2524699599465956) internal successors, (24361), 7740 states have internal predecessors, (24361), 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) [2022-11-22 00:23:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:23:00,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:00,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:23:00,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 00:23:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash 250374469, now seen corresponding path program 1 times [2022-11-22 00:23:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:00,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681858956] [2022-11-22 00:23:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:23:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:23:01,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:23:01,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681858956] [2022-11-22 00:23:01,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681858956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:23:01,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:23:01,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:23:01,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088121693] [2022-11-22 00:23:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:23:01,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:23:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:23:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:23:01,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:23:01,250 INFO L87 Difference]: Start difference. First operand has 7741 states, 7490 states have (on average 3.2524699599465956) internal successors, (24361), 7740 states have internal predecessors, (24361), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 00:23:01,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:23:01,927 INFO L93 Difference]: Finished difference Result 6221 states and 18523 transitions. [2022-11-22 00:23:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:23:01,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-22 00:23:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:23:02,002 INFO L225 Difference]: With dead ends: 6221 [2022-11-22 00:23:02,003 INFO L226 Difference]: Without dead ends: 6221 [2022-11-22 00:23:02,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:23:02,007 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 154 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:23:02,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 47 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:23:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2022-11-22 00:23:02,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 5671. [2022-11-22 00:23:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 5598 states have (on average 3.023043944265809) internal successors, (16923), 5670 states have internal predecessors, (16923), 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) [2022-11-22 00:23:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 16923 transitions. [2022-11-22 00:23:02,445 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 16923 transitions. Word has length 8 [2022-11-22 00:23:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:23:02,446 INFO L495 AbstractCegarLoop]: Abstraction has 5671 states and 16923 transitions. [2022-11-22 00:23:02,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 00:23:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 16923 transitions. [2022-11-22 00:23:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:23:02,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:02,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:23:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:23:02,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 00:23:02,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash 762300451, now seen corresponding path program 1 times [2022-11-22 00:23:02,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:02,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897357285] [2022-11-22 00:23:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:02,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:23:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:23:02,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:23:02,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897357285] [2022-11-22 00:23:02,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897357285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:23:02,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:23:02,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:23:02,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530693384] [2022-11-22 00:23:02,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:23:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:23:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:23:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:23:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:23:02,649 INFO L87 Difference]: Start difference. First operand 5671 states and 16923 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-22 00:23:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:23:02,955 INFO L93 Difference]: Finished difference Result 6877 states and 20316 transitions. [2022-11-22 00:23:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:23:02,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-11-22 00:23:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:23:03,007 INFO L225 Difference]: With dead ends: 6877 [2022-11-22 00:23:03,008 INFO L226 Difference]: Without dead ends: 6877 [2022-11-22 00:23:03,008 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 [2022-11-22 00:23:03,010 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:23:03,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 20 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:23:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6877 states. [2022-11-22 00:23:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6877 to 6857. [2022-11-22 00:23:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6857 states, 6766 states have (on average 2.9966006503103753) internal successors, (20275), 6856 states have internal predecessors, (20275), 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) [2022-11-22 00:23:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6857 states to 6857 states and 20275 transitions. [2022-11-22 00:23:03,408 INFO L78 Accepts]: Start accepts. Automaton has 6857 states and 20275 transitions. Word has length 11 [2022-11-22 00:23:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:23:03,409 INFO L495 AbstractCegarLoop]: Abstraction has 6857 states and 20275 transitions. [2022-11-22 00:23:03,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-22 00:23:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6857 states and 20275 transitions. [2022-11-22 00:23:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:23:03,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:03,411 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 00:23:03,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:23:03,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-22 00:23:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:03,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1345685696, now seen corresponding path program 1 times [2022-11-22 00:23:03,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:03,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192810339] [2022-11-22 00:23:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:03,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:23:03,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:23:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:23:03,473 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:23:03,480 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:23:03,481 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-22 00:23:03,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-11-22 00:23:03,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-11-22 00:23:03,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-11-22 00:23:03,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-11-22 00:23:03,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-11-22 00:23:03,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-11-22 00:23:03,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-11-22 00:23:03,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-11-22 00:23:03,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-11-22 00:23:03,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-11-22 00:23:03,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-11-22 00:23:03,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-11-22 00:23:03,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-11-22 00:23:03,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-11-22 00:23:03,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-11-22 00:23:03,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-11-22 00:23:03,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-11-22 00:23:03,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-11-22 00:23:03,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-11-22 00:23:03,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-11-22 00:23:03,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-11-22 00:23:03,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-11-22 00:23:03,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-11-22 00:23:03,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-11-22 00:23:03,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-11-22 00:23:03,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-11-22 00:23:03,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-11-22 00:23:03,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-11-22 00:23:03,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-11-22 00:23:03,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-11-22 00:23:03,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:23:03,502 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-22 00:23:03,503 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 00:23:03,503 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-22 00:23:03,700 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 00:23:03,711 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:23:03,713 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 351 transitions, 723 flow [2022-11-22 00:23:03,713 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 351 transitions, 723 flow [2022-11-22 00:23:03,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 351 transitions, 723 flow [2022-11-22 00:23:03,871 INFO L130 PetriNetUnfolder]: 31/388 cut-off events. [2022-11-22 00:23:03,872 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-22 00:23:03,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 388 events. 31/388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1180 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 322. Up to 8 conditions per place. [2022-11-22 00:23:03,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 72924 [2022-11-22 00:23:18,771 INFO L134 LiptonReduction]: Checked pairs total: 170986 [2022-11-22 00:23:18,772 INFO L136 LiptonReduction]: Total number of compositions: 343 [2022-11-22 00:23:18,776 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 118 places, 132 transitions, 285 flow [2022-11-22 00:23:29,283 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 263550 states, 260759 states have (on average 4.369045747222531) internal successors, (1139268), 263549 states have internal predecessors, (1139268), 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) [2022-11-22 00:23:29,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:23:29,290 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;@1aa11ad8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:23:29,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-22 00:23:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 263550 states, 260759 states have (on average 4.369045747222531) internal successors, (1139268), 263549 states have internal predecessors, (1139268), 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) [2022-11-22 00:23:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:23:29,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:29,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:23:29,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 00:23:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1873267324, now seen corresponding path program 1 times [2022-11-22 00:23:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:29,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307988180] [2022-11-22 00:23:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:23:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:23:30,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:23:30,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307988180] [2022-11-22 00:23:30,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307988180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:23:30,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:23:30,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:23:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764742015] [2022-11-22 00:23:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:23:30,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:23:30,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:23:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:23:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:23:30,462 INFO L87 Difference]: Start difference. First operand has 263550 states, 260759 states have (on average 4.369045747222531) internal successors, (1139268), 263549 states have internal predecessors, (1139268), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 00:23:36,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:23:36,633 INFO L93 Difference]: Finished difference Result 247763 states and 1010589 transitions. [2022-11-22 00:23:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:23:36,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-22 00:23:36,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:23:40,341 INFO L225 Difference]: With dead ends: 247763 [2022-11-22 00:23:40,342 INFO L226 Difference]: Without dead ends: 247763 [2022-11-22 00:23:40,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:23:40,359 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 279 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:23:40,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 78 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:23:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247763 states. [2022-11-22 00:23:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247763 to 216703. [2022-11-22 00:23:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216703 states, 215593 states have (on average 4.11307881053652) internal successors, (886751), 216702 states have internal predecessors, (886751), 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) [2022-11-22 00:23:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216703 states to 216703 states and 886751 transitions. [2022-11-22 00:23:56,092 INFO L78 Accepts]: Start accepts. Automaton has 216703 states and 886751 transitions. Word has length 8 [2022-11-22 00:23:56,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:23:56,093 INFO L495 AbstractCegarLoop]: Abstraction has 216703 states and 886751 transitions. [2022-11-22 00:23:56,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 00:23:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 216703 states and 886751 transitions. [2022-11-22 00:23:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:23:56,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:56,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:23:56,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:23:56,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-22 00:23:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:56,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2038534630, now seen corresponding path program 1 times [2022-11-22 00:23:56,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:56,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523507857] [2022-11-22 00:23:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:56,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:23:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:23:56,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:23:56,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523507857] [2022-11-22 00:23:56,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523507857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:23:56,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:23:56,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:23:56,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523410024] [2022-11-22 00:23:56,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:23:56,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:23:56,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:23:56,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:23:56,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:23:56,182 INFO L87 Difference]: Start difference. First operand 216703 states and 886751 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-22 00:24:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:24:00,869 INFO L93 Difference]: Finished difference Result 241993 states and 984410 transitions. [2022-11-22 00:24:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:24:00,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-11-22 00:24:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:24:02,783 INFO L225 Difference]: With dead ends: 241993 [2022-11-22 00:24:02,783 INFO L226 Difference]: Without dead ends: 241993 [2022-11-22 00:24:02,783 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 [2022-11-22 00:24:02,785 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:24:02,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 26 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:24:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241993 states.