./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur --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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- 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-38b53e6 [2022-11-25 23:23:01,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:23:01,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:23:01,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:23:01,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:23:01,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:23:01,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:23:01,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:23:01,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:23:01,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:23:01,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:23:01,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:23:01,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:23:01,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:23:01,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:23:01,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:23:01,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:23:01,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:23:01,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:23:01,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:23:01,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:23:01,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:23:01,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:23:01,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:23:01,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:23:01,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:23:01,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:23:01,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:23:01,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:23:01,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:23:01,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:23:01,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:23:01,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:23:01,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:23:01,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:23:01,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:23:01,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:23:01,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:23:01,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:23:01,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:23:01,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:23:01,223 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:23:01,248 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:23:01,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:23:01,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:23:01,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:23:01,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:23:01,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:23:01,250 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:23:01,250 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:23:01,250 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:23:01,251 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:23:01,251 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:23:01,251 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:23:01,251 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:23:01,251 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:23:01,252 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:23:01,252 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:23:01,252 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:23:01,252 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:23:01,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:23:01,253 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:23:01,253 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:23:01,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:23:01,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:23:01,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:23:01,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:23:01,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:23:01,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:23:01,255 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:23:01,255 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:23:01,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:23:01,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:23:01,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:23:01,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:23:01,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:23:01,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:23:01,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:23:01,257 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:23:01,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:23:01,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:23:01,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:23:01,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:23:01,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:23:01,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:23:01,258 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_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-11-25 23:23:01,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:23:01,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:23:01,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:23:01,543 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:23:01,544 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:23:01,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-25 23:23:04,648 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:23:04,859 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:23:04,860 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-25 23:23:04,869 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/data/3d38e4a29/8d83619ce7ce46eeba7836b82ea1ef80/FLAGb90270192 [2022-11-25 23:23:04,884 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/data/3d38e4a29/8d83619ce7ce46eeba7836b82ea1ef80 [2022-11-25 23:23:04,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:23:04,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:23:04,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:23:04,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:23:04,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:23:04,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:23:04" (1/1) ... [2022-11-25 23:23:04,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75bd108c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:04, skipping insertion in model container [2022-11-25 23:23:04,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:23:04" (1/1) ... [2022-11-25 23:23:04,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:23:04,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:23:05,107 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_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-25 23:23:05,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:23:05,124 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:23:05,143 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_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-25 23:23:05,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:23:05,161 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:23:05,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05 WrapperNode [2022-11-25 23:23:05,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:23:05,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:23:05,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:23:05,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:23:05,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,216 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 116 [2022-11-25 23:23:05,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:23:05,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:23:05,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:23:05,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:23:05,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:23:05,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:23:05,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:23:05,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:23:05,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (1/1) ... [2022-11-25 23:23:05,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:23:05,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:05,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:23:05,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:23:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:23:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 23:23:05,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 23:23:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 23:23:05,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 23:23:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:23:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:23:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:23:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:23:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:23:05,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:23:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:23:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:23:05,356 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:23:05,500 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:23:05,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:23:05,922 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:23:05,931 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:23:05,937 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 23:23:05,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:23:05 BoogieIcfgContainer [2022-11-25 23:23:05,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:23:05,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:23:05,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:23:05,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:23:05,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:23:04" (1/3) ... [2022-11-25 23:23:05,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2304bb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:23:05, skipping insertion in model container [2022-11-25 23:23:05,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:05" (2/3) ... [2022-11-25 23:23:05,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2304bb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:23:05, skipping insertion in model container [2022-11-25 23:23:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:23:05" (3/3) ... [2022-11-25 23:23:05,955 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-11-25 23:23:05,964 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:23:05,975 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:23:05,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 23:23:05,978 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:23:06,107 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 23:23:06,144 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:23:06,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 189 transitions, 394 flow [2022-11-25 23:23:06,164 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 189 transitions, 394 flow [2022-11-25 23:23:06,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-11-25 23:23:06,245 INFO L130 PetriNetUnfolder]: 15/187 cut-off events. [2022-11-25 23:23:06,246 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 23:23:06,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2022-11-25 23:23:06,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 1400 [2022-11-25 23:23:13,510 INFO L134 LiptonReduction]: Checked pairs total: 2062 [2022-11-25 23:23:13,511 INFO L136 LiptonReduction]: Total number of compositions: 204 [2022-11-25 23:23:13,524 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 29 transitions, 74 flow [2022-11-25 23:23:13,542 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 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) [2022-11-25 23:23:13,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:23:13,567 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;@5edfca99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:23:13,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-25 23:23:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 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) [2022-11-25 23:23:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-25 23:23:13,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:13,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-25 23:23:13,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:13,582 INFO L85 PathProgramCache]: Analyzing trace with hash 22992, now seen corresponding path program 1 times [2022-11-25 23:23:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:13,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203158794] [2022-11-25 23:23:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:13,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:13,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203158794] [2022-11-25 23:23:13,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203158794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:13,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:13,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:23:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273247811] [2022-11-25 23:23:13,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:13,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:23:13,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:23:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:23:14,002 INFO L87 Difference]: Start difference. First operand has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 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 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) [2022-11-25 23:23:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:14,126 INFO L93 Difference]: Finished difference Result 119 states and 285 transitions. [2022-11-25 23:23:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:23:14,128 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 [2022-11-25 23:23:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:14,143 INFO L225 Difference]: With dead ends: 119 [2022-11-25 23:23:14,143 INFO L226 Difference]: Without dead ends: 119 [2022-11-25 23:23:14,144 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 [2022-11-25 23:23:14,148 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:14,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-25 23:23:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 64. [2022-11-25 23:23:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 2.8653846153846154) internal successors, (149), 63 states have internal predecessors, (149), 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) [2022-11-25 23:23:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 149 transitions. [2022-11-25 23:23:14,204 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 149 transitions. Word has length 2 [2022-11-25 23:23:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:14,205 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 149 transitions. [2022-11-25 23:23:14,210 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) [2022-11-25 23:23:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 149 transitions. [2022-11-25 23:23:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:23:14,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:14,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:23:14,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:23:14,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:14,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:14,214 INFO L85 PathProgramCache]: Analyzing trace with hash 713486, now seen corresponding path program 1 times [2022-11-25 23:23:14,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:14,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691469790] [2022-11-25 23:23:14,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:14,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:14,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:14,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691469790] [2022-11-25 23:23:14,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691469790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:14,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063814511] [2022-11-25 23:23:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:14,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:14,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:14,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:14,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:23:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:14,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:23:14,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:14,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:23:14,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063814511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:14,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:23:14,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 23:23:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284286070] [2022-11-25 23:23:14,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:14,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:23:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:23:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:23:14,485 INFO L87 Difference]: Start difference. First operand 64 states and 149 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) [2022-11-25 23:23:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:14,599 INFO L93 Difference]: Finished difference Result 117 states and 283 transitions. [2022-11-25 23:23:14,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:23:14,599 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 [2022-11-25 23:23:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:14,601 INFO L225 Difference]: With dead ends: 117 [2022-11-25 23:23:14,601 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 23:23:14,601 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 [2022-11-25 23:23:14,602 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:14,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 23:23:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 62. [2022-11-25 23:23:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 2.826923076923077) internal successors, (147), 61 states have internal predecessors, (147), 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) [2022-11-25 23:23:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 147 transitions. [2022-11-25 23:23:14,610 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 147 transitions. Word has length 3 [2022-11-25 23:23:14,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:14,610 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 147 transitions. [2022-11-25 23:23:14,611 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-11-25 23:23:14,611 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 147 transitions. [2022-11-25 23:23:14,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:23:14,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:14,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:23:14,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:23:14,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 23:23:14,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash 713487, now seen corresponding path program 1 times [2022-11-25 23:23:14,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:14,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946080468] [2022-11-25 23:23:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:14,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:14,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:14,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946080468] [2022-11-25 23:23:14,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946080468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:14,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965491621] [2022-11-25 23:23:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:14,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:14,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:14,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:14,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:23:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:15,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:23:15,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:15,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:15,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965491621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:15,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [763576878] [2022-11-25 23:23:15,097 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:23:15,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:23:15,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 23:23:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433454366] [2022-11-25 23:23:15,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:23:15,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:23:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:23:15,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:23:15,104 INFO L87 Difference]: Start difference. First operand 62 states and 147 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2022-11-25 23:23:15,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:15,351 INFO L93 Difference]: Finished difference Result 288 states and 703 transitions. [2022-11-25 23:23:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:23:15,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 3 [2022-11-25 23:23:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:15,354 INFO L225 Difference]: With dead ends: 288 [2022-11-25 23:23:15,358 INFO L226 Difference]: Without dead ends: 288 [2022-11-25 23:23:15,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:23:15,359 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:15,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 0 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:23:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-25 23:23:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 68. [2022-11-25 23:23:15,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 2.7413793103448274) internal successors, (159), 67 states have internal predecessors, (159), 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) [2022-11-25 23:23:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 159 transitions. [2022-11-25 23:23:15,378 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 159 transitions. Word has length 3 [2022-11-25 23:23:15,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:15,378 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 159 transitions. [2022-11-25 23:23:15,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2022-11-25 23:23:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 159 transitions. [2022-11-25 23:23:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:23:15,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:15,380 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-25 23:23:15,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:23:15,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:15,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash -218646191, now seen corresponding path program 2 times [2022-11-25 23:23:15,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:15,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176290898] [2022-11-25 23:23:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:15,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:15,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176290898] [2022-11-25 23:23:15,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176290898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:15,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830869746] [2022-11-25 23:23:15,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:23:15,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:15,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:15,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:15,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:23:15,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 23:23:15,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:23:15,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 23:23:15,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:23:15,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:23:15,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830869746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:15,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:23:15,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 23:23:15,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299234184] [2022-11-25 23:23:15,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:15,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:23:15,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:15,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:23:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:23:15,821 INFO L87 Difference]: Start difference. First operand 68 states and 159 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2022-11-25 23:23:15,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:15,896 INFO L93 Difference]: Finished difference Result 67 states and 158 transitions. [2022-11-25 23:23:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:23:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 6 [2022-11-25 23:23:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:15,898 INFO L225 Difference]: With dead ends: 67 [2022-11-25 23:23:15,899 INFO L226 Difference]: Without dead ends: 67 [2022-11-25 23:23:15,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:23:15,904 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:15,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-25 23:23:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2022-11-25 23:23:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 62 states have internal predecessors, (150), 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) [2022-11-25 23:23:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 150 transitions. [2022-11-25 23:23:15,928 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 150 transitions. Word has length 6 [2022-11-25 23:23:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:15,929 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 150 transitions. [2022-11-25 23:23:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2022-11-25 23:23:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 150 transitions. [2022-11-25 23:23:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:23:15,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:15,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:23:15,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 23:23:16,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:16,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash -207158834, now seen corresponding path program 1 times [2022-11-25 23:23:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131279410] [2022-11-25 23:23:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:16,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:16,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131279410] [2022-11-25 23:23:16,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131279410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:16,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:16,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:23:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344120541] [2022-11-25 23:23:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:23:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:23:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:23:16,233 INFO L87 Difference]: Start difference. First operand 63 states and 150 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-25 23:23:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:16,291 INFO L93 Difference]: Finished difference Result 97 states and 237 transitions. [2022-11-25 23:23:16,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:23:16,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-25 23:23:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:16,292 INFO L225 Difference]: With dead ends: 97 [2022-11-25 23:23:16,292 INFO L226 Difference]: Without dead ends: 97 [2022-11-25 23:23:16,293 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 [2022-11-25 23:23:16,293 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:16,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-25 23:23:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2022-11-25 23:23:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 2.891891891891892) internal successors, (214), 82 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) [2022-11-25 23:23:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 214 transitions. [2022-11-25 23:23:16,299 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 214 transitions. Word has length 6 [2022-11-25 23:23:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:16,300 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 214 transitions. [2022-11-25 23:23:16,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-25 23:23:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 214 transitions. [2022-11-25 23:23:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:23:16,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:16,301 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-25 23:23:16,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:23:16,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:16,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2125199533, now seen corresponding path program 1 times [2022-11-25 23:23:16,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:16,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075679582] [2022-11-25 23:23:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:16,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:16,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075679582] [2022-11-25 23:23:16,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075679582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:16,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923738394] [2022-11-25 23:23:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:16,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:16,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:16,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:16,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:23:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:16,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:23:16,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:16,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:16,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923738394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:16,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1014178650] [2022-11-25 23:23:16,623 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:23:16,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:23:16,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 23:23:16,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506881017] [2022-11-25 23:23:16,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:23:16,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 23:23:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 23:23:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:23:16,632 INFO L87 Difference]: Start difference. First operand 83 states and 214 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-11-25 23:23:16,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:16,977 INFO L93 Difference]: Finished difference Result 849 states and 2246 transitions. [2022-11-25 23:23:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:23:16,978 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 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 7 [2022-11-25 23:23:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:16,983 INFO L225 Difference]: With dead ends: 849 [2022-11-25 23:23:16,983 INFO L226 Difference]: Without dead ends: 849 [2022-11-25 23:23:16,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:23:16,984 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 340 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:16,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 0 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:23:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-25 23:23:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 89. [2022-11-25 23:23:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 80 states have (on average 2.825) internal successors, (226), 88 states have internal predecessors, (226), 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) [2022-11-25 23:23:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 226 transitions. [2022-11-25 23:23:16,999 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 226 transitions. Word has length 7 [2022-11-25 23:23:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:16,999 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 226 transitions. [2022-11-25 23:23:16,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-11-25 23:23:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 226 transitions. [2022-11-25 23:23:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:23:17,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:17,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:17,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:23:17,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:17,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2126832914, now seen corresponding path program 1 times [2022-11-25 23:23:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274435908] [2022-11-25 23:23:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:17,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:17,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274435908] [2022-11-25 23:23:17,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274435908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:17,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:17,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:23:17,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195767058] [2022-11-25 23:23:17,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:17,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:23:17,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:17,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:23:17,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:23:17,284 INFO L87 Difference]: Start difference. First operand 89 states and 226 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-25 23:23:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:17,339 INFO L93 Difference]: Finished difference Result 117 states and 301 transitions. [2022-11-25 23:23:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:23:17,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-25 23:23:17,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:17,341 INFO L225 Difference]: With dead ends: 117 [2022-11-25 23:23:17,341 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 23:23:17,341 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 [2022-11-25 23:23:17,342 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:17,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 23:23:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2022-11-25 23:23:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 96 states have (on average 2.9479166666666665) internal successors, (283), 104 states have internal predecessors, (283), 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) [2022-11-25 23:23:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 283 transitions. [2022-11-25 23:23:17,348 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 283 transitions. Word has length 7 [2022-11-25 23:23:17,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:17,349 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 283 transitions. [2022-11-25 23:23:17,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-25 23:23:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 283 transitions. [2022-11-25 23:23:17,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:23:17,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:17,351 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:17,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:23:17,351 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:17,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:17,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1511128494, now seen corresponding path program 1 times [2022-11-25 23:23:17,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:17,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832684422] [2022-11-25 23:23:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:17,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:23:17,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:17,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832684422] [2022-11-25 23:23:17,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832684422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:17,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:17,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:23:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759327594] [2022-11-25 23:23:17,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:17,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:23:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:23:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:23:17,446 INFO L87 Difference]: Start difference. First operand 105 states and 283 transitions. 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) [2022-11-25 23:23:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:17,511 INFO L93 Difference]: Finished difference Result 143 states and 356 transitions. [2022-11-25 23:23:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:23:17,512 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 [2022-11-25 23:23:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:17,513 INFO L225 Difference]: With dead ends: 143 [2022-11-25 23:23:17,513 INFO L226 Difference]: Without dead ends: 141 [2022-11-25 23:23:17,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:23:17,514 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:17,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:17,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-25 23:23:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2022-11-25 23:23:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 127 states have (on average 2.7401574803149606) internal successors, (348), 135 states have internal predecessors, (348), 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) [2022-11-25 23:23:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 348 transitions. [2022-11-25 23:23:17,521 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 348 transitions. Word has length 8 [2022-11-25 23:23:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:17,522 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 348 transitions. [2022-11-25 23:23:17,522 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) [2022-11-25 23:23:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 348 transitions. [2022-11-25 23:23:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:23:17,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:17,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:17,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:23:17,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1507310258, now seen corresponding path program 1 times [2022-11-25 23:23:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:17,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477275467] [2022-11-25 23:23:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:17,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:17,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:17,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477275467] [2022-11-25 23:23:17,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477275467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:17,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:17,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:23:17,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319939325] [2022-11-25 23:23:17,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:17,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:23:17,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:17,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:23:17,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:23:17,596 INFO L87 Difference]: Start difference. First operand 136 states and 348 transitions. Second operand has 3 states, 2 states have (on average 4.0) 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) [2022-11-25 23:23:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:17,627 INFO L93 Difference]: Finished difference Result 118 states and 294 transitions. [2022-11-25 23:23:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:23:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) 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 [2022-11-25 23:23:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:17,629 INFO L225 Difference]: With dead ends: 118 [2022-11-25 23:23:17,629 INFO L226 Difference]: Without dead ends: 101 [2022-11-25 23:23:17,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:23:17,630 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:17,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:23:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-25 23:23:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-25 23:23:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 2.6526315789473682) internal successors, (252), 100 states have internal predecessors, (252), 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) [2022-11-25 23:23:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 252 transitions. [2022-11-25 23:23:17,635 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 252 transitions. Word has length 8 [2022-11-25 23:23:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:17,636 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 252 transitions. [2022-11-25 23:23:17,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) 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) [2022-11-25 23:23:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 252 transitions. [2022-11-25 23:23:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:23:17,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:17,637 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:17,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:23:17,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:17,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:17,638 INFO L85 PathProgramCache]: Analyzing trace with hash -68147952, now seen corresponding path program 1 times [2022-11-25 23:23:17,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:17,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409270167] [2022-11-25 23:23:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:23:17,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:17,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409270167] [2022-11-25 23:23:17,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409270167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:17,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:17,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:23:17,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845437345] [2022-11-25 23:23:17,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:17,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:23:17,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:23:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:23:17,727 INFO L87 Difference]: Start difference. First operand 101 states and 252 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-25 23:23:17,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:17,821 INFO L93 Difference]: Finished difference Result 134 states and 311 transitions. [2022-11-25 23:23:17,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:23:17,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-25 23:23:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:17,823 INFO L225 Difference]: With dead ends: 134 [2022-11-25 23:23:17,823 INFO L226 Difference]: Without dead ends: 115 [2022-11-25 23:23:17,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:23:17,824 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:17,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-25 23:23:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2022-11-25 23:23:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 2.642105263157895) internal successors, (251), 100 states have internal predecessors, (251), 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) [2022-11-25 23:23:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 251 transitions. [2022-11-25 23:23:17,829 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 251 transitions. Word has length 9 [2022-11-25 23:23:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:17,829 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 251 transitions. [2022-11-25 23:23:17,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-25 23:23:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 251 transitions. [2022-11-25 23:23:17,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:23:17,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:17,830 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:23:17,831 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash -478992823, now seen corresponding path program 1 times [2022-11-25 23:23:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:17,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058421422] [2022-11-25 23:23:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:17,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:23:17,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:17,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058421422] [2022-11-25 23:23:17,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058421422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:17,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882238740] [2022-11-25 23:23:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:17,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:17,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:17,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:23:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:18,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 23:23:18,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:23:18,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:23:18,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882238740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:18,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1601186648] [2022-11-25 23:23:18,211 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:23:18,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:23:18,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2022-11-25 23:23:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313477542] [2022-11-25 23:23:18,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:23:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 23:23:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 23:23:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:23:18,215 INFO L87 Difference]: Start difference. First operand 101 states and 251 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 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) [2022-11-25 23:23:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:18,472 INFO L93 Difference]: Finished difference Result 150 states and 354 transitions. [2022-11-25 23:23:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:23:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 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 10 [2022-11-25 23:23:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:18,474 INFO L225 Difference]: With dead ends: 150 [2022-11-25 23:23:18,474 INFO L226 Difference]: Without dead ends: 105 [2022-11-25 23:23:18,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:23:18,475 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:18,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:23:18,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-25 23:23:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2022-11-25 23:23:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 2.574712643678161) internal successors, (224), 90 states have internal predecessors, (224), 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) [2022-11-25 23:23:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 224 transitions. [2022-11-25 23:23:18,479 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 224 transitions. Word has length 10 [2022-11-25 23:23:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:18,479 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 224 transitions. [2022-11-25 23:23:18,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 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) [2022-11-25 23:23:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 224 transitions. [2022-11-25 23:23:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:23:18,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:18,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:18,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:23:18,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:18,681 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:18,681 INFO L85 PathProgramCache]: Analyzing trace with hash -330281935, now seen corresponding path program 1 times [2022-11-25 23:23:18,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:18,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298645828] [2022-11-25 23:23:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:18,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:23:18,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298645828] [2022-11-25 23:23:18,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298645828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:18,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267593506] [2022-11-25 23:23:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:18,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:18,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:18,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:18,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:23:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:18,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 23:23:18,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:23:18,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:23:18,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267593506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:18,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [611415179] [2022-11-25 23:23:18,998 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:23:18,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:23:18,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 11 [2022-11-25 23:23:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524905663] [2022-11-25 23:23:18,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:23:18,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:23:18,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:18,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:23:18,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:23:19,000 INFO L87 Difference]: Start difference. First operand 91 states and 224 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 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) [2022-11-25 23:23:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:19,273 INFO L93 Difference]: Finished difference Result 198 states and 467 transitions. [2022-11-25 23:23:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:23:19,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 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 [2022-11-25 23:23:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:19,274 INFO L225 Difference]: With dead ends: 198 [2022-11-25 23:23:19,275 INFO L226 Difference]: Without dead ends: 153 [2022-11-25 23:23:19,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:23:19,276 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:19,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:23:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-25 23:23:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 112. [2022-11-25 23:23:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 2.7222222222222223) internal successors, (294), 111 states have internal predecessors, (294), 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) [2022-11-25 23:23:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 294 transitions. [2022-11-25 23:23:19,280 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 294 transitions. Word has length 11 [2022-11-25 23:23:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:19,281 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 294 transitions. [2022-11-25 23:23:19,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 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) [2022-11-25 23:23:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 294 transitions. [2022-11-25 23:23:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:23:19,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:19,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:19,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:23:19,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 23:23:19,488 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:19,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:19,488 INFO L85 PathProgramCache]: Analyzing trace with hash -820802641, now seen corresponding path program 1 times [2022-11-25 23:23:19,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:19,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755789170] [2022-11-25 23:23:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:19,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:23:19,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:19,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755789170] [2022-11-25 23:23:19,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755789170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:19,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621243638] [2022-11-25 23:23:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:19,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:19,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:19,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:19,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:23:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:19,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:23:19,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:23:19,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:23:19,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621243638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:19,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [914827189] [2022-11-25 23:23:19,758 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:23:19,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:23:19,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 23:23:19,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115960258] [2022-11-25 23:23:19,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:23:19,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:23:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:23:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:23:19,762 INFO L87 Difference]: Start difference. First operand 112 states and 294 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-11-25 23:23:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:19,851 INFO L93 Difference]: Finished difference Result 222 states and 582 transitions. [2022-11-25 23:23:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:23:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 12 [2022-11-25 23:23:19,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:19,854 INFO L225 Difference]: With dead ends: 222 [2022-11-25 23:23:19,854 INFO L226 Difference]: Without dead ends: 222 [2022-11-25 23:23:19,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:23:19,855 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:19,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-25 23:23:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 166. [2022-11-25 23:23:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 3.074074074074074) internal successors, (498), 165 states have internal predecessors, (498), 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) [2022-11-25 23:23:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 498 transitions. [2022-11-25 23:23:19,863 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 498 transitions. Word has length 12 [2022-11-25 23:23:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:19,863 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 498 transitions. [2022-11-25 23:23:19,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-11-25 23:23:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 498 transitions. [2022-11-25 23:23:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 23:23:19,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:19,866 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1] [2022-11-25 23:23:19,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:23:20,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 23:23:20,072 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:20,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1669588851, now seen corresponding path program 2 times [2022-11-25 23:23:20,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:20,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917326842] [2022-11-25 23:23:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:20,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:20,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917326842] [2022-11-25 23:23:20,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917326842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:20,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477445259] [2022-11-25 23:23:20,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:23:20,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:20,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:20,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:20,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:23:20,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 23:23:20,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:23:20,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 23:23:20,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 23:23:20,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:23:20,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477445259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:20,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:23:20,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-11-25 23:23:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443251205] [2022-11-25 23:23:20,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:23:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:20,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:23:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:23:20,507 INFO L87 Difference]: Start difference. First operand 166 states and 498 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-25 23:23:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:20,548 INFO L93 Difference]: Finished difference Result 147 states and 442 transitions. [2022-11-25 23:23:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:23:20,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 13 [2022-11-25 23:23:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:20,550 INFO L225 Difference]: With dead ends: 147 [2022-11-25 23:23:20,550 INFO L226 Difference]: Without dead ends: 114 [2022-11-25 23:23:20,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:23:20,551 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:20,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:23:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-25 23:23:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 50. [2022-11-25 23:23:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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) [2022-11-25 23:23:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 108 transitions. [2022-11-25 23:23:20,554 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 108 transitions. Word has length 13 [2022-11-25 23:23:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:20,555 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 108 transitions. [2022-11-25 23:23:20,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-25 23:23:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 108 transitions. [2022-11-25 23:23:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:23:20,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:20,557 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:23:20,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 23:23:20,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:20,768 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-25 23:23:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2108301367, now seen corresponding path program 2 times [2022-11-25 23:23:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:20,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242801488] [2022-11-25 23:23:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:23:20,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:23:20,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242801488] [2022-11-25 23:23:20,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242801488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:23:20,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766556555] [2022-11-25 23:23:20,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:23:20,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:20,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:20,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:21,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 23:23:21,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 23:23:21,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:23:21,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:23:21,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:23:21,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:23:21,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766556555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:21,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [165633518] [2022-11-25 23:23:21,180 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:23:21,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:23:21,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2022-11-25 23:23:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786767345] [2022-11-25 23:23:21,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:23:21,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:23:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:23:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:23:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:23:21,184 INFO L87 Difference]: Start difference. First operand 50 states and 108 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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) [2022-11-25 23:23:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:21,387 INFO L93 Difference]: Finished difference Result 79 states and 165 transitions. [2022-11-25 23:23:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:23:21,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 14 [2022-11-25 23:23:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:21,387 INFO L225 Difference]: With dead ends: 79 [2022-11-25 23:23:21,387 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:23:21,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:23:21,388 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:21,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:23:21,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:23:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:23:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-25 23:23:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:23:21,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-25 23:23:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:21,390 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:23:21,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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) [2022-11-25 23:23:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:23:21,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:23:21,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-11-25 23:23:21,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-25 23:23:21,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-25 23:23:21,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-25 23:23:21,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-25 23:23:21,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-25 23:23:21,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-25 23:23:21,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-11-25 23:23:21,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2022-11-25 23:23:21,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-11-25 23:23:21,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-25 23:23:21,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-25 23:23:21,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-25 23:23:21,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-25 23:23:21,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 23:23:21,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:21,597 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:21,602 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 23:23:21,602 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:23:21,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:23:21 BasicIcfg [2022-11-25 23:23:21,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:23:21,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:23:21,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:23:21,606 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:23:21,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:23:05" (3/4) ... [2022-11-25 23:23:21,609 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:23:21,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 23:23:21,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 23:23:21,621 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-25 23:23:21,622 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 23:23:21,622 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 23:23:21,622 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:23:21,662 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:23:21,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:23:21,663 INFO L158 Benchmark]: Toolchain (without parser) took 16774.05ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 135.3MB in the beginning and 173.3MB in the end (delta: -38.0MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2022-11-25 23:23:21,663 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:23:21,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.89ms. Allocated memory is still 178.3MB. Free memory was 135.1MB in the beginning and 123.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 23:23:21,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.58ms. Allocated memory is still 178.3MB. Free memory was 123.7MB in the beginning and 122.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:23:21,664 INFO L158 Benchmark]: Boogie Preprocessor took 31.91ms. Allocated memory is still 178.3MB. Free memory was 122.1MB in the beginning and 120.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:23:21,664 INFO L158 Benchmark]: RCFGBuilder took 691.56ms. Allocated memory is still 178.3MB. Free memory was 120.5MB in the beginning and 102.7MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 23:23:21,665 INFO L158 Benchmark]: TraceAbstraction took 15661.83ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 101.8MB in the beginning and 176.5MB in the end (delta: -74.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-11-25 23:23:21,665 INFO L158 Benchmark]: Witness Printer took 56.60ms. Allocated memory is still 257.9MB. Free memory was 176.5MB in the beginning and 173.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:23:21,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.89ms. Allocated memory is still 178.3MB. Free memory was 135.1MB in the beginning and 123.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.58ms. Allocated memory is still 178.3MB. Free memory was 123.7MB in the beginning and 122.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.91ms. Allocated memory is still 178.3MB. Free memory was 122.1MB in the beginning and 120.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 691.56ms. Allocated memory is still 178.3MB. Free memory was 120.5MB in the beginning and 102.7MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15661.83ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 101.8MB in the beginning and 176.5MB in the end (delta: -74.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Witness Printer took 56.60ms. Allocated memory is still 257.9MB. Free memory was 176.5MB in the beginning and 173.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.3s, 181 PlacesBefore, 31 PlacesAfterwards, 189 TransitionsBefore, 29 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 7 FixpointIterations, 122 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 9 ConcurrentYvCompositions, 10 ChoiceCompositions, 204 TotalNumberOfCompositions, 2062 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1808, independent: 1740, independent conditional: 0, independent unconditional: 1740, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1041, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1041, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1808, independent: 715, independent conditional: 0, independent unconditional: 715, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 1041, unknown conditional: 0, unknown unconditional: 1041] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 56, Positive conditional cache size: 0, Positive unconditional cache size: 56, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 213 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 15.5s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1002 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1002 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1333 IncrementalHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 0 mSDtfsCounter, 1333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=13, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 1314 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 198 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 838 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1305 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 30 InterpolantComputations, 9 PerfectInterpolantSequences, 138/258 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 23:23:21,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca3eed1d-be38-4ee0-9623-b45bc0ad7263/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE