./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:49:01,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:49:01,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:49:01,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:49:01,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:49:01,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:49:01,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:49:01,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:49:01,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:49:01,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:49:01,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:49:01,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:49:01,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:49:01,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:49:01,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:49:01,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:49:01,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:49:01,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:49:01,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:49:01,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:49:01,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:49:01,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:49:01,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:49:01,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:49:01,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:49:01,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:49:01,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:49:01,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:49:01,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:49:01,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:49:01,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:49:01,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:49:01,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:49:01,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:49:01,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:49:01,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:49:01,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:49:01,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:49:01,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:49:01,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:49:01,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:49:01,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:49:01,233 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:49:01,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:49:01,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:49:01,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:49:01,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:49:01,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:49:01,236 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:49:01,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:49:01,236 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:49:01,236 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:49:01,237 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:49:01,237 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:49:01,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:49:01,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:49:01,238 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:49:01,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:49:01,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:49:01,239 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:49:01,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:49:01,240 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:49:01,240 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:49:01,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:49:01,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:49:01,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:49:01,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:49:01,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:49:01,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:49:01,241 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:49:01,242 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:49:01,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:49:01,242 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:49:01,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:49:01,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:49:01,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:49:01,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:49:01,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:49:01,244 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:49:01,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:49:01,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:49:01,244 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:49:01,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:49:01,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:49:01,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:49:01,245 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_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2022-11-22 01:49:01,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:49:01,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:49:01,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:49:01,592 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:49:01,593 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:49:01,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread/stateful01-2.i [2022-11-22 01:49:04,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:49:04,965 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:49:04,971 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/sv-benchmarks/c/pthread/stateful01-2.i [2022-11-22 01:49:04,989 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/data/93905a96e/4b18ebeb77664bbfb6739364c5076e28/FLAG52ab58c45 [2022-11-22 01:49:05,004 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/data/93905a96e/4b18ebeb77664bbfb6739364c5076e28 [2022-11-22 01:49:05,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:49:05,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:49:05,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:49:05,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:49:05,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:49:05,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a30f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05, skipping insertion in model container [2022-11-22 01:49:05,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:49:05,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:49:05,445 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_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2022-11-22 01:49:05,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:49:05,462 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:49:05,521 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_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2022-11-22 01:49:05,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:49:05,579 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:49:05,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05 WrapperNode [2022-11-22 01:49:05,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:49:05,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:49:05,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:49:05,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:49:05,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,650 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-22 01:49:05,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:49:05,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:49:05,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:49:05,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:49:05,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:49:05,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:49:05,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:49:05,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:49:05,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (1/1) ... [2022-11-22 01:49:05,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:49:05,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:05,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:49:05,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:49:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:49:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 01:49:05,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 01:49:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 01:49:05,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 01:49:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:49:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:49:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:49:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:49:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:49:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:49:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:49:05,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:49:05,806 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:49:05,973 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:49:05,975 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:49:06,241 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:49:06,251 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:49:06,251 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:49:06,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:06 BoogieIcfgContainer [2022-11-22 01:49:06,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:49:06,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:49:06,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:49:06,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:49:06,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:49:05" (1/3) ... [2022-11-22 01:49:06,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dcca73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:06, skipping insertion in model container [2022-11-22 01:49:06,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05" (2/3) ... [2022-11-22 01:49:06,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dcca73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:06, skipping insertion in model container [2022-11-22 01:49:06,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:06" (3/3) ... [2022-11-22 01:49:06,276 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2022-11-22 01:49:06,285 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:49:06,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:49:06,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-22 01:49:06,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:49:06,418 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 01:49:06,460 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:49:06,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 108 transitions, 232 flow [2022-11-22 01:49:06,480 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 108 transitions, 232 flow [2022-11-22 01:49:06,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 108 transitions, 232 flow [2022-11-22 01:49:06,555 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-11-22 01:49:06,556 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 01:49:06,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 1/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2022-11-22 01:49:06,569 INFO L119 LiptonReduction]: Number of co-enabled transitions 1516 [2022-11-22 01:49:11,227 INFO L134 LiptonReduction]: Checked pairs total: 6498 [2022-11-22 01:49:11,227 INFO L136 LiptonReduction]: Total number of compositions: 81 [2022-11-22 01:49:11,236 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 37 transitions, 90 flow [2022-11-22 01:49:11,290 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 430 states, 405 states have (on average 2.437037037037037) internal successors, (987), 429 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:11,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:49:11,316 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;@4b3979d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:49:11,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-22 01:49:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 430 states, 405 states have (on average 2.437037037037037) internal successors, (987), 429 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:49:11,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:11,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:49:11,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:11,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash 11522664, now seen corresponding path program 1 times [2022-11-22 01:49:11,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:11,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811259544] [2022-11-22 01:49:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:11,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:11,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811259544] [2022-11-22 01:49:11,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811259544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:11,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:11,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:49:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290315407] [2022-11-22 01:49:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:11,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:11,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:11,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:11,742 INFO L87 Difference]: Start difference. First operand has 430 states, 405 states have (on average 2.437037037037037) internal successors, (987), 429 states have internal predecessors, (987), 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 2.0) internal successors, (4), 2 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) [2022-11-22 01:49:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:11,888 INFO L93 Difference]: Finished difference Result 444 states and 982 transitions. [2022-11-22 01:49:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:11,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 4 [2022-11-22 01:49:11,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:11,903 INFO L225 Difference]: With dead ends: 444 [2022-11-22 01:49:11,903 INFO L226 Difference]: Without dead ends: 438 [2022-11-22 01:49:11,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:11,907 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:11,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 17 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-22 01:49:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 402. [2022-11-22 01:49:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 381 states have (on average 2.409448818897638) internal successors, (918), 401 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 918 transitions. [2022-11-22 01:49:11,974 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 918 transitions. Word has length 4 [2022-11-22 01:49:11,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:11,974 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 918 transitions. [2022-11-22 01:49:11,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-22 01:49:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 918 transitions. [2022-11-22 01:49:11,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:49:11,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:11,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:49:11,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:49:11,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash 11522682, now seen corresponding path program 1 times [2022-11-22 01:49:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:11,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769090791] [2022-11-22 01:49:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:12,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:12,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769090791] [2022-11-22 01:49:12,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769090791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:12,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:12,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:49:12,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295019575] [2022-11-22 01:49:12,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:12,049 INFO L87 Difference]: Start difference. First operand 402 states and 918 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-22 01:49:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:12,149 INFO L93 Difference]: Finished difference Result 366 states and 831 transitions. [2022-11-22 01:49:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 4 [2022-11-22 01:49:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:12,153 INFO L225 Difference]: With dead ends: 366 [2022-11-22 01:49:12,155 INFO L226 Difference]: Without dead ends: 366 [2022-11-22 01:49:12,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:12,158 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:12,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 13 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-22 01:49:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-11-22 01:49:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 349 states have (on average 2.3810888252148996) internal successors, (831), 365 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 831 transitions. [2022-11-22 01:49:12,208 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 831 transitions. Word has length 4 [2022-11-22 01:49:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:12,208 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 831 transitions. [2022-11-22 01:49:12,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-22 01:49:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 831 transitions. [2022-11-22 01:49:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:49:12,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:12,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:12,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:49:12,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:12,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:12,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1484021065, now seen corresponding path program 1 times [2022-11-22 01:49:12,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:12,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078924564] [2022-11-22 01:49:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:12,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:12,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:12,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078924564] [2022-11-22 01:49:12,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078924564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:12,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:12,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:49:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413974913] [2022-11-22 01:49:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:12,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:12,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:12,276 INFO L87 Difference]: Start difference. First operand 366 states and 831 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:12,333 INFO L93 Difference]: Finished difference Result 330 states and 727 transitions. [2022-11-22 01:49:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:49:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:12,336 INFO L225 Difference]: With dead ends: 330 [2022-11-22 01:49:12,336 INFO L226 Difference]: Without dead ends: 330 [2022-11-22 01:49:12,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:12,337 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:12,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-22 01:49:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 320. [2022-11-22 01:49:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 309 states have (on average 2.320388349514563) internal successors, (717), 319 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 717 transitions. [2022-11-22 01:49:12,352 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 717 transitions. Word has length 8 [2022-11-22 01:49:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:12,352 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 717 transitions. [2022-11-22 01:49:12,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 717 transitions. [2022-11-22 01:49:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:49:12,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:12,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:12,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:49:12,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:12,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1484021096, now seen corresponding path program 1 times [2022-11-22 01:49:12,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:12,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722053887] [2022-11-22 01:49:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:12,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:12,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:12,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722053887] [2022-11-22 01:49:12,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722053887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:12,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:12,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:49:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950892940] [2022-11-22 01:49:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:12,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:12,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:12,469 INFO L87 Difference]: Start difference. First operand 320 states and 717 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:12,525 INFO L93 Difference]: Finished difference Result 274 states and 605 transitions. [2022-11-22 01:49:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:49:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:12,528 INFO L225 Difference]: With dead ends: 274 [2022-11-22 01:49:12,528 INFO L226 Difference]: Without dead ends: 274 [2022-11-22 01:49:12,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:12,532 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:12,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 16 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-22 01:49:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-11-22 01:49:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 268 states have (on average 2.2574626865671643) internal successors, (605), 273 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 605 transitions. [2022-11-22 01:49:12,545 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 605 transitions. Word has length 8 [2022-11-22 01:49:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:12,546 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 605 transitions. [2022-11-22 01:49:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 605 transitions. [2022-11-22 01:49:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:49:12,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:12,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:12,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:49:12,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:12,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1241052925, now seen corresponding path program 1 times [2022-11-22 01:49:12,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:12,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59093274] [2022-11-22 01:49:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:12,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:12,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:12,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59093274] [2022-11-22 01:49:12,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59093274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:12,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:12,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:49:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269970627] [2022-11-22 01:49:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:12,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:12,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:12,722 INFO L87 Difference]: Start difference. First operand 274 states and 605 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-22 01:49:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:12,777 INFO L93 Difference]: Finished difference Result 154 states and 251 transitions. [2022-11-22 01:49:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:12,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-11-22 01:49:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:12,779 INFO L225 Difference]: With dead ends: 154 [2022-11-22 01:49:12,779 INFO L226 Difference]: Without dead ends: 154 [2022-11-22 01:49:12,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:12,781 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:12,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-22 01:49:12,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-22 01:49:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 145 states have (on average 1.7310344827586206) internal successors, (251), 153 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) [2022-11-22 01:49:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 251 transitions. [2022-11-22 01:49:12,787 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 251 transitions. Word has length 9 [2022-11-22 01:49:12,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:12,788 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 251 transitions. [2022-11-22 01:49:12,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-22 01:49:12,789 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 251 transitions. [2022-11-22 01:49:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:49:12,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:12,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:12,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:49:12,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:12,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash -214166701, now seen corresponding path program 1 times [2022-11-22 01:49:12,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:12,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701471483] [2022-11-22 01:49:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:12,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:12,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701471483] [2022-11-22 01:49:12,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701471483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:12,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:12,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:49:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938768779] [2022-11-22 01:49:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:12,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:49:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:49:12,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:49:12,897 INFO L87 Difference]: Start difference. First operand 154 states and 251 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:12,991 INFO L93 Difference]: Finished difference Result 148 states and 241 transitions. [2022-11-22 01:49:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:49:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 [2022-11-22 01:49:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:12,993 INFO L225 Difference]: With dead ends: 148 [2022-11-22 01:49:12,993 INFO L226 Difference]: Without dead ends: 148 [2022-11-22 01:49:12,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:49:12,994 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:12,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 15 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:12,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-22 01:49:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-22 01:49:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 141 states have (on average 1.7092198581560283) internal successors, (241), 147 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 241 transitions. [2022-11-22 01:49:13,002 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 241 transitions. Word has length 10 [2022-11-22 01:49:13,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:13,002 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 241 transitions. [2022-11-22 01:49:13,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,003 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 241 transitions. [2022-11-22 01:49:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:49:13,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:13,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:13,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:49:13,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1950767139, now seen corresponding path program 1 times [2022-11-22 01:49:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:13,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776658850] [2022-11-22 01:49:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:13,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:13,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:13,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776658850] [2022-11-22 01:49:13,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776658850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:13,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:13,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:49:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018035304] [2022-11-22 01:49:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:13,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:49:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:49:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:49:13,092 INFO L87 Difference]: Start difference. First operand 148 states and 241 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:13,157 INFO L93 Difference]: Finished difference Result 142 states and 231 transitions. [2022-11-22 01:49:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:49:13,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:49:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:13,159 INFO L225 Difference]: With dead ends: 142 [2022-11-22 01:49:13,159 INFO L226 Difference]: Without dead ends: 142 [2022-11-22 01:49:13,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:49:13,161 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:13,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 10 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-22 01:49:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-22 01:49:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.686131386861314) internal successors, (231), 141 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 231 transitions. [2022-11-22 01:49:13,167 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 231 transitions. Word has length 11 [2022-11-22 01:49:13,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:13,168 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 231 transitions. [2022-11-22 01:49:13,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,168 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 231 transitions. [2022-11-22 01:49:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:49:13,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:13,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:13,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:49:13,178 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:13,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:13,179 INFO L85 PathProgramCache]: Analyzing trace with hash -875817163, now seen corresponding path program 1 times [2022-11-22 01:49:13,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:13,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880990071] [2022-11-22 01:49:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:13,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:13,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880990071] [2022-11-22 01:49:13,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880990071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:13,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:13,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:49:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100065486] [2022-11-22 01:49:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:13,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:49:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:49:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:49:13,258 INFO L87 Difference]: Start difference. First operand 142 states and 231 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:13,309 INFO L93 Difference]: Finished difference Result 138 states and 225 transitions. [2022-11-22 01:49:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:49:13,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:49:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:13,311 INFO L225 Difference]: With dead ends: 138 [2022-11-22 01:49:13,311 INFO L226 Difference]: Without dead ends: 138 [2022-11-22 01:49:13,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:49:13,312 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:13,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 15 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-22 01:49:13,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-22 01:49:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 135 states have (on average 1.6666666666666667) internal successors, (225), 137 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 225 transitions. [2022-11-22 01:49:13,317 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 225 transitions. Word has length 11 [2022-11-22 01:49:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:13,317 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 225 transitions. [2022-11-22 01:49:13,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,317 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 225 transitions. [2022-11-22 01:49:13,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:49:13,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:13,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:13,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:49:13,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:13,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:13,319 INFO L85 PathProgramCache]: Analyzing trace with hash 973892778, now seen corresponding path program 1 times [2022-11-22 01:49:13,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:13,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223615124] [2022-11-22 01:49:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:13,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:13,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223615124] [2022-11-22 01:49:13,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223615124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:13,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:13,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:49:13,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677086286] [2022-11-22 01:49:13,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:13,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:49:13,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:49:13,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:49:13,391 INFO L87 Difference]: Start difference. First operand 138 states and 225 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:13,451 INFO L93 Difference]: Finished difference Result 134 states and 218 transitions. [2022-11-22 01:49:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:49:13,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2022-11-22 01:49:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:13,453 INFO L225 Difference]: With dead ends: 134 [2022-11-22 01:49:13,453 INFO L226 Difference]: Without dead ends: 134 [2022-11-22 01:49:13,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:49:13,454 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:13,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-22 01:49:13,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-22 01:49:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.6515151515151516) internal successors, (218), 133 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 218 transitions. [2022-11-22 01:49:13,459 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 218 transitions. Word has length 19 [2022-11-22 01:49:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:13,460 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 218 transitions. [2022-11-22 01:49:13,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 218 transitions. [2022-11-22 01:49:13,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 01:49:13,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:13,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:13,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:49:13,461 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:13,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:13,462 INFO L85 PathProgramCache]: Analyzing trace with hash 125905332, now seen corresponding path program 1 times [2022-11-22 01:49:13,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:13,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112839011] [2022-11-22 01:49:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:13,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:13,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112839011] [2022-11-22 01:49:13,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112839011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:13,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:13,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:49:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413110047] [2022-11-22 01:49:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:13,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:49:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:49:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:49:13,550 INFO L87 Difference]: Start difference. First operand 134 states and 218 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:13,627 INFO L93 Difference]: Finished difference Result 130 states and 211 transitions. [2022-11-22 01:49:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:49:13,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-11-22 01:49:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:13,628 INFO L225 Difference]: With dead ends: 130 [2022-11-22 01:49:13,628 INFO L226 Difference]: Without dead ends: 78 [2022-11-22 01:49:13,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:49:13,629 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:13,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:49:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-22 01:49:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-22 01:49:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.5714285714285714) internal successors, (121), 77 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 121 transitions. [2022-11-22 01:49:13,632 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 121 transitions. Word has length 20 [2022-11-22 01:49:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:13,633 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 121 transitions. [2022-11-22 01:49:13,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 121 transitions. [2022-11-22 01:49:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 01:49:13,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:13,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:13,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:49:13,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-22 01:49:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash -152761179, now seen corresponding path program 1 times [2022-11-22 01:49:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:13,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766842853] [2022-11-22 01:49:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:13,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:13,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766842853] [2022-11-22 01:49:13,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766842853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:13,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:13,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:49:13,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860300537] [2022-11-22 01:49:13,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:13,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:49:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:13,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:49:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:49:13,707 INFO L87 Difference]: Start difference. First operand 78 states and 121 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:13,744 INFO L93 Difference]: Finished difference Result 76 states and 118 transitions. [2022-11-22 01:49:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:49:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2022-11-22 01:49:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:13,745 INFO L225 Difference]: With dead ends: 76 [2022-11-22 01:49:13,745 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:49:13,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:49:13,746 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7 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 [2022-11-22 01:49:13,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:49:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:49:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:49:13,747 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) [2022-11-22 01:49:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:49:13,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-11-22 01:49:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:13,748 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:49:13,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:49:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:49:13,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:49:13,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-22 01:49:13,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-22 01:49:13,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-22 01:49:13,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-22 01:49:13,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-22 01:49:13,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-22 01:49:13,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-22 01:49:13,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-22 01:49:13,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-22 01:49:13,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-22 01:49:13,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-22 01:49:13,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-22 01:49:13,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-22 01:49:13,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-22 01:49:13,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-22 01:49:13,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-22 01:49:13,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-22 01:49:13,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-22 01:49:13,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:49:13,757 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:13,762 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:49:13,762 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:49:13,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:49:13 BasicIcfg [2022-11-22 01:49:13,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:49:13,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:49:13,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:49:13,766 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:49:13,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:06" (3/4) ... [2022-11-22 01:49:13,769 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:49:13,775 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-22 01:49:13,775 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-22 01:49:13,779 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-22 01:49:13,780 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-22 01:49:13,780 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 01:49:13,780 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:49:13,810 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:49:13,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:49:13,811 INFO L158 Benchmark]: Toolchain (without parser) took 8803.54ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 105.2MB in the beginning and 94.9MB in the end (delta: 10.3MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2022-11-22 01:49:13,812 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 123.7MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:49:13,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.46ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 85.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 01:49:13,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.85ms. Allocated memory is still 151.0MB. Free memory was 85.4MB in the beginning and 83.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:49:13,812 INFO L158 Benchmark]: Boogie Preprocessor took 63.68ms. Allocated memory is still 151.0MB. Free memory was 83.3MB in the beginning and 81.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:49:13,813 INFO L158 Benchmark]: RCFGBuilder took 535.85ms. Allocated memory is still 151.0MB. Free memory was 81.5MB in the beginning and 119.9MB in the end (delta: -38.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-11-22 01:49:13,813 INFO L158 Benchmark]: TraceAbstraction took 7495.68ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 121.3MB in the beginning and 98.1MB in the end (delta: 23.2MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2022-11-22 01:49:13,813 INFO L158 Benchmark]: Witness Printer took 45.53ms. Allocated memory is still 182.5MB. Free memory was 98.1MB in the beginning and 94.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:49:13,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 123.7MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.46ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 85.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.85ms. Allocated memory is still 151.0MB. Free memory was 85.4MB in the beginning and 83.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.68ms. Allocated memory is still 151.0MB. Free memory was 83.3MB in the beginning and 81.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 535.85ms. Allocated memory is still 151.0MB. Free memory was 81.5MB in the beginning and 119.9MB in the end (delta: -38.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7495.68ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 121.3MB in the beginning and 98.1MB in the end (delta: 23.2MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. * Witness Printer took 45.53ms. Allocated memory is still 182.5MB. Free memory was 98.1MB in the beginning and 94.9MB 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: 4.7s, 114 PlacesBefore, 44 PlacesAfterwards, 108 TransitionsBefore, 37 TransitionsAfterwards, 1516 CoEnabledTransitionPairs, 6 FixpointIterations, 46 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 81 TotalNumberOfCompositions, 6498 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3340, independent: 3037, independent conditional: 0, independent unconditional: 3037, dependent: 303, dependent conditional: 0, dependent unconditional: 303, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1107, independent: 1045, independent conditional: 0, independent unconditional: 1045, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1107, independent: 1032, independent conditional: 0, independent unconditional: 1032, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 216, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 181, dependent conditional: 0, dependent unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3340, independent: 1992, independent conditional: 0, independent unconditional: 1992, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 1107, unknown conditional: 0, unknown unconditional: 1107] , Statistics on independence cache: Total cache size (in pairs): 333, Positive cache size: 300, Positive conditional cache size: 0, Positive unconditional cache size: 300, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, 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: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: 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, 154 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 244 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 244 mSDsluCounter, 161 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 559 IncrementalHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 87 mSDtfsCounter, 559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=430occurred in iteration=0, InterpolantAutomatonStates: 42, 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, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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! [2022-11-22 01:49:13,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4087a9f5-1b1a-4566-9678-6ee6ed832c4b/bin/utaipan-g80aRyZoba/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