./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh --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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- 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-2329fc7 [2022-12-14 03:06:25,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:06:25,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:06:25,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:06:25,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:06:25,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:06:25,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:06:25,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:06:25,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:06:25,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:06:25,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:06:25,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:06:25,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:06:25,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:06:25,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:06:25,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:06:25,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:06:25,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:06:25,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:06:25,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:06:25,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:06:25,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:06:25,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:06:25,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:06:26,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:06:26,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:06:26,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:06:26,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:06:26,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:06:26,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:06:26,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:06:26,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:06:26,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:06:26,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:06:26,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:06:26,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:06:26,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:06:26,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:06:26,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:06:26,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:06:26,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:06:26,008 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 03:06:26,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:06:26,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:06:26,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:06:26,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:06:26,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:06:26,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:06:26,025 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:06:26,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:06:26,026 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:06:26,026 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:06:26,026 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:06:26,026 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:06:26,026 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:06:26,026 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:06:26,026 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:06:26,027 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:06:26,027 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:06:26,027 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:06:26,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:06:26,027 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 03:06:26,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:06:26,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:06:26,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:06:26,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:06:26,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:06:26,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:06:26,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:06:26,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:06:26,029 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:06:26,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:06:26,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:06:26,030 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:06:26,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:06:26,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:06:26,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:06:26,030 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_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2022-12-14 03:06:26,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:06:26,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:06:26,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:06:26,206 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:06:26,206 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:06:26,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-12-14 03:06:28,850 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:06:29,015 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:06:29,016 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-12-14 03:06:29,022 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/data/2ecc02d11/e970e3627ad84b20a7ad44106263a4b2/FLAG87bd645f2 [2022-12-14 03:06:29,036 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/data/2ecc02d11/e970e3627ad84b20a7ad44106263a4b2 [2022-12-14 03:06:29,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:06:29,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:06:29,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:06:29,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:06:29,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:06:29,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35aeade4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29, skipping insertion in model container [2022-12-14 03:06:29,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:06:29,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:06:29,213 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_f80e4b66-5a2e-4760-aafd-e2f284a762c2/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-12-14 03:06:29,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:06:29,229 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:06:29,249 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_f80e4b66-5a2e-4760-aafd-e2f284a762c2/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-12-14 03:06:29,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:06:29,267 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:06:29,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29 WrapperNode [2022-12-14 03:06:29,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:06:29,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:06:29,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:06:29,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:06:29,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,306 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 184 [2022-12-14 03:06:29,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:06:29,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:06:29,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:06:29,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:06:29,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:06:29,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:06:29,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:06:29,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:06:29,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (1/1) ... [2022-12-14 03:06:29,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:06:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:06:29,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:06:29,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:06:29,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:06:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 03:06:29,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 03:06:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 03:06:29,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 03:06:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:06:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 03:06:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 03:06:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 03:06:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:06:29,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:06:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 03:06:29,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 03:06:29,402 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 03:06:29,491 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:06:29,493 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:06:29,796 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:06:29,807 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:06:29,807 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 03:06:29,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:06:29 BoogieIcfgContainer [2022-12-14 03:06:29,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:06:29,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:06:29,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:06:29,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:06:29,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:06:29" (1/3) ... [2022-12-14 03:06:29,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dfccab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:06:29, skipping insertion in model container [2022-12-14 03:06:29,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:06:29" (2/3) ... [2022-12-14 03:06:29,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dfccab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:06:29, skipping insertion in model container [2022-12-14 03:06:29,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:06:29" (3/3) ... [2022-12-14 03:06:29,819 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2022-12-14 03:06:29,828 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 03:06:29,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:06:29,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 03:06:29,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 03:06:29,919 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 03:06:29,956 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 03:06:29,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 231 transitions, 478 flow [2022-12-14 03:06:29,974 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 231 transitions, 478 flow [2022-12-14 03:06:29,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 231 transitions, 478 flow [2022-12-14 03:06:30,057 INFO L130 PetriNetUnfolder]: 19/229 cut-off events. [2022-12-14 03:06:30,057 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 03:06:30,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 229 events. 19/229 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-12-14 03:06:30,067 INFO L119 LiptonReduction]: Number of co-enabled transitions 4212 [2022-12-14 03:06:34,943 INFO L134 LiptonReduction]: Checked pairs total: 5375 [2022-12-14 03:06:34,943 INFO L136 LiptonReduction]: Total number of compositions: 266 [2022-12-14 03:06:34,949 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 37 transitions, 90 flow [2022-12-14 03:06:34,963 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 129 states, 115 states have (on average 2.765217391304348) internal successors, (318), 128 states have internal predecessors, (318), 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) [2022-12-14 03:06:34,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:06:34,981 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;@59500123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:06:34,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-12-14 03:06:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 115 states have (on average 2.765217391304348) internal successors, (318), 128 states have internal predecessors, (318), 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) [2022-12-14 03:06:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 03:06:34,986 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:34,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 03:06:34,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:34,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:34,990 INFO L85 PathProgramCache]: Analyzing trace with hash 29385, now seen corresponding path program 1 times [2022-12-14 03:06:34,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:34,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711662388] [2022-12-14 03:06:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:34,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:35,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:35,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711662388] [2022-12-14 03:06:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711662388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:35,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:35,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 03:06:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251858902] [2022-12-14 03:06:35,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:35,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:35,187 INFO L87 Difference]: Start difference. First operand has 129 states, 115 states have (on average 2.765217391304348) internal successors, (318), 128 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:35,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:35,277 INFO L93 Difference]: Finished difference Result 213 states and 527 transitions. [2022-12-14 03:06:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:35,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-12-14 03:06:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:35,286 INFO L225 Difference]: With dead ends: 213 [2022-12-14 03:06:35,286 INFO L226 Difference]: Without dead ends: 213 [2022-12-14 03:06:35,286 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 [2022-12-14 03:06:35,288 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:35,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:06:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-14 03:06:35,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 111. [2022-12-14 03:06:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 100 states have (on average 2.71) internal successors, (271), 110 states have internal predecessors, (271), 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) [2022-12-14 03:06:35,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 271 transitions. [2022-12-14 03:06:35,317 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 271 transitions. Word has length 2 [2022-12-14 03:06:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:35,317 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 271 transitions. [2022-12-14 03:06:35,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:35,318 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 271 transitions. [2022-12-14 03:06:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 03:06:35,318 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:35,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 03:06:35,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 03:06:35,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 29343, now seen corresponding path program 1 times [2022-12-14 03:06:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:35,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879051355] [2022-12-14 03:06:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:35,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:35,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879051355] [2022-12-14 03:06:35,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879051355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:35,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:35,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 03:06:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356438052] [2022-12-14 03:06:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:35,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:35,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:35,371 INFO L87 Difference]: Start difference. First operand 111 states and 271 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:35,406 INFO L93 Difference]: Finished difference Result 109 states and 267 transitions. [2022-12-14 03:06:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:35,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-12-14 03:06:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:35,408 INFO L225 Difference]: With dead ends: 109 [2022-12-14 03:06:35,409 INFO L226 Difference]: Without dead ends: 109 [2022-12-14 03:06:35,409 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 [2022-12-14 03:06:35,410 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:35,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-14 03:06:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-12-14 03:06:35,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 2.67) internal successors, (267), 108 states have internal predecessors, (267), 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) [2022-12-14 03:06:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 267 transitions. [2022-12-14 03:06:35,416 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 267 transitions. Word has length 2 [2022-12-14 03:06:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:35,416 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 267 transitions. [2022-12-14 03:06:35,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 267 transitions. [2022-12-14 03:06:35,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 03:06:35,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:35,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 03:06:35,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 03:06:35,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:35,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash 911831, now seen corresponding path program 1 times [2022-12-14 03:06:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:35,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715150794] [2022-12-14 03:06:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:35,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:35,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:35,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715150794] [2022-12-14 03:06:35,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715150794] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:06:35,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938214534] [2022-12-14 03:06:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:35,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:06:35,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:06:35,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:06:35,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 03:06:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:35,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:06:35,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:06:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:35,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:06:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:35,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938214534] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:06:35,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1449432243] [2022-12-14 03:06:35,575 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 03:06:35,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:06:35,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 03:06:35,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019784768] [2022-12-14 03:06:35,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:06:35,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 03:06:35,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:35,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 03:06:35,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:06:35,577 INFO L87 Difference]: Start difference. First operand 109 states and 267 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:35,752 INFO L93 Difference]: Finished difference Result 523 states and 1303 transitions. [2022-12-14 03:06:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:06:35,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 03:06:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:35,755 INFO L225 Difference]: With dead ends: 523 [2022-12-14 03:06:35,755 INFO L226 Difference]: Without dead ends: 523 [2022-12-14 03:06:35,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 03:06:35,756 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 150 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:35,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 5 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 03:06:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-12-14 03:06:35,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 115. [2022-12-14 03:06:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 106 states have (on average 2.6320754716981134) internal successors, (279), 114 states have internal predecessors, (279), 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) [2022-12-14 03:06:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 279 transitions. [2022-12-14 03:06:35,766 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 279 transitions. Word has length 3 [2022-12-14 03:06:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:35,766 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 279 transitions. [2022-12-14 03:06:35,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 279 transitions. [2022-12-14 03:06:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 03:06:35,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:35,766 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-12-14 03:06:35,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 03:06:35,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:06:35,969 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1395443273, now seen corresponding path program 2 times [2022-12-14 03:06:35,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:35,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904050424] [2022-12-14 03:06:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:35,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:36,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:36,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904050424] [2022-12-14 03:06:36,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904050424] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:06:36,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990218826] [2022-12-14 03:06:36,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:06:36,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:06:36,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:06:36,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:06:36,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 03:06:36,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 03:06:36,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:06:36,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:06:36,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:06:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:06:36,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:06:36,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990218826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:36,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:06:36,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-14 03:06:36,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147323902] [2022-12-14 03:06:36,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:36,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:36,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:36,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:06:36,268 INFO L87 Difference]: Start difference. First operand 115 states and 279 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:36,300 INFO L93 Difference]: Finished difference Result 113 states and 277 transitions. [2022-12-14 03:06:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:36,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 03:06:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:36,301 INFO L225 Difference]: With dead ends: 113 [2022-12-14 03:06:36,301 INFO L226 Difference]: Without dead ends: 113 [2022-12-14 03:06:36,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:06:36,303 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:36,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-14 03:06:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2022-12-14 03:06:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 98 states have (on average 2.663265306122449) internal successors, (261), 104 states have internal predecessors, (261), 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) [2022-12-14 03:06:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 261 transitions. [2022-12-14 03:06:36,310 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 261 transitions. Word has length 6 [2022-12-14 03:06:36,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:36,310 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 261 transitions. [2022-12-14 03:06:36,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 261 transitions. [2022-12-14 03:06:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 03:06:36,311 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:36,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:36,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 03:06:36,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-14 03:06:36,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:36,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1013088804, now seen corresponding path program 1 times [2022-12-14 03:06:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:36,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841807534] [2022-12-14 03:06:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:36,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:36,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:36,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841807534] [2022-12-14 03:06:36,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841807534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:36,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:36,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:06:36,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35223694] [2022-12-14 03:06:36,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:36,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:36,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:36,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:36,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,563 INFO L87 Difference]: Start difference. First operand 105 states and 261 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:36,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:36,611 INFO L93 Difference]: Finished difference Result 136 states and 318 transitions. [2022-12-14 03:06:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:36,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 03:06:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:36,613 INFO L225 Difference]: With dead ends: 136 [2022-12-14 03:06:36,613 INFO L226 Difference]: Without dead ends: 136 [2022-12-14 03:06:36,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,614 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:36,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-14 03:06:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 115. [2022-12-14 03:06:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 108 states have (on average 2.638888888888889) internal successors, (285), 114 states have internal predecessors, (285), 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) [2022-12-14 03:06:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 285 transitions. [2022-12-14 03:06:36,619 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 285 transitions. Word has length 8 [2022-12-14 03:06:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:36,619 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 285 transitions. [2022-12-14 03:06:36,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 285 transitions. [2022-12-14 03:06:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 03:06:36,620 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:36,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:36,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 03:06:36,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1015021051, now seen corresponding path program 1 times [2022-12-14 03:06:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:36,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696290245] [2022-12-14 03:06:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:36,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:36,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696290245] [2022-12-14 03:06:36,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696290245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:36,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:36,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:06:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041833778] [2022-12-14 03:06:36,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:36,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:36,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:36,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,665 INFO L87 Difference]: Start difference. First operand 115 states and 285 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:36,719 INFO L93 Difference]: Finished difference Result 162 states and 404 transitions. [2022-12-14 03:06:36,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:36,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 03:06:36,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:36,722 INFO L225 Difference]: With dead ends: 162 [2022-12-14 03:06:36,722 INFO L226 Difference]: Without dead ends: 162 [2022-12-14 03:06:36,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,723 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:36,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-14 03:06:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 137. [2022-12-14 03:06:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 130 states have (on average 2.8076923076923075) internal successors, (365), 136 states have internal predecessors, (365), 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) [2022-12-14 03:06:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 365 transitions. [2022-12-14 03:06:36,729 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 365 transitions. Word has length 8 [2022-12-14 03:06:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:36,730 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 365 transitions. [2022-12-14 03:06:36,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 365 transitions. [2022-12-14 03:06:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 03:06:36,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:36,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:36,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 03:06:36,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:36,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1400880661, now seen corresponding path program 1 times [2022-12-14 03:06:36,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:36,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105804834] [2022-12-14 03:06:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:36,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:36,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105804834] [2022-12-14 03:06:36,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105804834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:36,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:36,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:06:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873623401] [2022-12-14 03:06:36,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:36,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,766 INFO L87 Difference]: Start difference. First operand 137 states and 365 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-12-14 03:06:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:36,815 INFO L93 Difference]: Finished difference Result 115 states and 307 transitions. [2022-12-14 03:06:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 [2022-12-14 03:06:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:36,816 INFO L225 Difference]: With dead ends: 115 [2022-12-14 03:06:36,816 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 03:06:36,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,817 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:36,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 03:06:36,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 93. [2022-12-14 03:06:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 2.550561797752809) internal successors, (227), 92 states have internal predecessors, (227), 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) [2022-12-14 03:06:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 227 transitions. [2022-12-14 03:06:36,820 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 227 transitions. Word has length 9 [2022-12-14 03:06:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:36,821 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 227 transitions. [2022-12-14 03:06:36,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-12-14 03:06:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 227 transitions. [2022-12-14 03:06:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 03:06:36,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:36,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:36,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 03:06:36,822 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:36,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1374797709, now seen corresponding path program 1 times [2022-12-14 03:06:36,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:36,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052443533] [2022-12-14 03:06:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 03:06:36,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:36,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052443533] [2022-12-14 03:06:36,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052443533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:36,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:36,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:06:36,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576033392] [2022-12-14 03:06:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:36,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:36,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,855 INFO L87 Difference]: Start difference. First operand 93 states and 227 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2022-12-14 03:06:36,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:36,917 INFO L93 Difference]: Finished difference Result 158 states and 391 transitions. [2022-12-14 03:06:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:36,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 [2022-12-14 03:06:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:36,918 INFO L225 Difference]: With dead ends: 158 [2022-12-14 03:06:36,918 INFO L226 Difference]: Without dead ends: 158 [2022-12-14 03:06:36,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,919 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:36,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:06:36,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-12-14 03:06:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2022-12-14 03:06:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 2.682170542635659) internal successors, (346), 132 states have internal predecessors, (346), 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) [2022-12-14 03:06:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 346 transitions. [2022-12-14 03:06:36,923 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 346 transitions. Word has length 10 [2022-12-14 03:06:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:36,923 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 346 transitions. [2022-12-14 03:06:36,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2022-12-14 03:06:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 346 transitions. [2022-12-14 03:06:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 03:06:36,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:36,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:36,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 03:06:36,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1556211345, now seen corresponding path program 1 times [2022-12-14 03:06:36,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:36,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525594801] [2022-12-14 03:06:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:36,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 03:06:36,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:36,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525594801] [2022-12-14 03:06:36,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525594801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:36,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:36,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:06:36,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645584393] [2022-12-14 03:06:36,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:36,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:36,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:36,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:36,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:36,958 INFO L87 Difference]: Start difference. First operand 133 states and 346 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:36,999 INFO L93 Difference]: Finished difference Result 142 states and 353 transitions. [2022-12-14 03:06:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:36,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 03:06:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:37,000 INFO L225 Difference]: With dead ends: 142 [2022-12-14 03:06:37,000 INFO L226 Difference]: Without dead ends: 142 [2022-12-14 03:06:37,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:37,001 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:37,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:37,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-14 03:06:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2022-12-14 03:06:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 122 states have (on average 2.680327868852459) internal successors, (327), 124 states have internal predecessors, (327), 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) [2022-12-14 03:06:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 327 transitions. [2022-12-14 03:06:37,004 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 327 transitions. Word has length 15 [2022-12-14 03:06:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:37,005 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 327 transitions. [2022-12-14 03:06:37,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 327 transitions. [2022-12-14 03:06:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 03:06:37,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:37,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 03:06:37,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1556211346, now seen corresponding path program 1 times [2022-12-14 03:06:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:37,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623442707] [2022-12-14 03:06:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:37,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 03:06:37,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:37,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623442707] [2022-12-14 03:06:37,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623442707] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:37,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:37,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:06:37,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259738076] [2022-12-14 03:06:37,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:37,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 03:06:37,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 03:06:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:37,043 INFO L87 Difference]: Start difference. First operand 125 states and 327 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:37,077 INFO L93 Difference]: Finished difference Result 127 states and 329 transitions. [2022-12-14 03:06:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 03:06:37,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 03:06:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:37,078 INFO L225 Difference]: With dead ends: 127 [2022-12-14 03:06:37,078 INFO L226 Difference]: Without dead ends: 127 [2022-12-14 03:06:37,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 03:06:37,079 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:37,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-14 03:06:37,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-12-14 03:06:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 2.653225806451613) internal successors, (329), 126 states have internal predecessors, (329), 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) [2022-12-14 03:06:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 329 transitions. [2022-12-14 03:06:37,083 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 329 transitions. Word has length 15 [2022-12-14 03:06:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:37,083 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 329 transitions. [2022-12-14 03:06:37,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 03:06:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 329 transitions. [2022-12-14 03:06:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 03:06:37,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:37,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:37,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 03:06:37,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash 582255682, now seen corresponding path program 1 times [2022-12-14 03:06:37,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:37,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304338009] [2022-12-14 03:06:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:37,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:06:37,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:37,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304338009] [2022-12-14 03:06:37,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304338009] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:06:37,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881892931] [2022-12-14 03:06:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:37,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:06:37,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:06:37,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:06:37,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 03:06:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:37,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 03:06:37,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:06:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:06:37,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:06:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 03:06:37,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881892931] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:06:37,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1765890802] [2022-12-14 03:06:37,236 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 03:06:37,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:06:37,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-14 03:06:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288060556] [2022-12-14 03:06:37,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:06:37,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 03:06:37,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 03:06:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:06:37,238 INFO L87 Difference]: Start difference. First operand 127 states and 329 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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) [2022-12-14 03:06:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:37,299 INFO L93 Difference]: Finished difference Result 133 states and 335 transitions. [2022-12-14 03:06:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 03:06:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 17 [2022-12-14 03:06:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:37,301 INFO L225 Difference]: With dead ends: 133 [2022-12-14 03:06:37,301 INFO L226 Difference]: Without dead ends: 133 [2022-12-14 03:06:37,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-14 03:06:37,302 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:37,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:06:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-14 03:06:37,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-12-14 03:06:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 130 states have (on average 2.576923076923077) internal successors, (335), 132 states have internal predecessors, (335), 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) [2022-12-14 03:06:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 335 transitions. [2022-12-14 03:06:37,306 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 335 transitions. Word has length 17 [2022-12-14 03:06:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:37,306 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 335 transitions. [2022-12-14 03:06:37,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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) [2022-12-14 03:06:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 335 transitions. [2022-12-14 03:06:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 03:06:37,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:37,307 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:37,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 03:06:37,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 03:06:37,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:37,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:37,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1416316014, now seen corresponding path program 2 times [2022-12-14 03:06:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:37,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063305831] [2022-12-14 03:06:37,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 03:06:37,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:37,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063305831] [2022-12-14 03:06:37,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063305831] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:06:37,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163333770] [2022-12-14 03:06:37,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 03:06:37,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:06:37,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:06:37,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:06:37,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 03:06:37,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 03:06:37,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 03:06:37,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 03:06:37,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:06:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 03:06:37,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 03:06:37,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163333770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:37,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 03:06:37,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-12-14 03:06:37,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425750899] [2022-12-14 03:06:37,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:37,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:06:37,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:37,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:06:37,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-14 03:06:37,824 INFO L87 Difference]: Start difference. First operand 133 states and 335 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-14 03:06:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:37,884 INFO L93 Difference]: Finished difference Result 150 states and 361 transitions. [2022-12-14 03:06:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:06:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 23 [2022-12-14 03:06:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:37,886 INFO L225 Difference]: With dead ends: 150 [2022-12-14 03:06:37,886 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 03:06:37,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-14 03:06:37,886 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:37,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:06:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 03:06:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 85. [2022-12-14 03:06:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 83 states have (on average 2.3734939759036147) internal successors, (197), 84 states have internal predecessors, (197), 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) [2022-12-14 03:06:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 197 transitions. [2022-12-14 03:06:37,890 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 197 transitions. Word has length 23 [2022-12-14 03:06:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:37,891 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 197 transitions. [2022-12-14 03:06:37,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-14 03:06:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 197 transitions. [2022-12-14 03:06:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 03:06:37,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:37,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:37,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 03:06:38,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 03:06:38,092 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1972198241, now seen corresponding path program 1 times [2022-12-14 03:06:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:38,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011620515] [2022-12-14 03:06:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:38,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:06:38,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:38,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011620515] [2022-12-14 03:06:38,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011620515] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 03:06:38,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111332076] [2022-12-14 03:06:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:38,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 03:06:38,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:06:38,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 03:06:38,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 03:06:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:38,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 03:06:38,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 03:06:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:06:38,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 03:06:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 03:06:38,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111332076] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 03:06:38,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1830341418] [2022-12-14 03:06:38,402 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 03:06:38,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 03:06:38,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-14 03:06:38,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186479385] [2022-12-14 03:06:38,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 03:06:38,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 03:06:38,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:38,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 03:06:38,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2022-12-14 03:06:38,404 INFO L87 Difference]: Start difference. First operand 85 states and 197 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 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) [2022-12-14 03:06:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:38,466 INFO L93 Difference]: Finished difference Result 87 states and 199 transitions. [2022-12-14 03:06:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 03:06:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 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 23 [2022-12-14 03:06:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:38,467 INFO L225 Difference]: With dead ends: 87 [2022-12-14 03:06:38,467 INFO L226 Difference]: Without dead ends: 87 [2022-12-14 03:06:38,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2022-12-14 03:06:38,468 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:38,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 03:06:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-14 03:06:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-12-14 03:06:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 2.3411764705882354) internal successors, (199), 86 states have internal predecessors, (199), 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) [2022-12-14 03:06:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 199 transitions. [2022-12-14 03:06:38,471 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 199 transitions. Word has length 23 [2022-12-14 03:06:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:38,471 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 199 transitions. [2022-12-14 03:06:38,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 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) [2022-12-14 03:06:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 199 transitions. [2022-12-14 03:06:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 03:06:38,472 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:38,472 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:38,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 03:06:38,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 03:06:38,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:38,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:38,673 INFO L85 PathProgramCache]: Analyzing trace with hash 615107151, now seen corresponding path program 2 times [2022-12-14 03:06:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:38,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655895853] [2022-12-14 03:06:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 03:06:38,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:38,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655895853] [2022-12-14 03:06:38,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655895853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:38,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:38,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:06:38,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406429340] [2022-12-14 03:06:38,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:38,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:06:38,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:06:38,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:06:38,853 INFO L87 Difference]: Start difference. First operand 87 states and 199 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-12-14 03:06:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:38,884 INFO L93 Difference]: Finished difference Result 86 states and 198 transitions. [2022-12-14 03:06:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:06:38,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 25 [2022-12-14 03:06:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:38,885 INFO L225 Difference]: With dead ends: 86 [2022-12-14 03:06:38,885 INFO L226 Difference]: Without dead ends: 86 [2022-12-14 03:06:38,885 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 [2022-12-14 03:06:38,886 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:38,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-14 03:06:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-12-14 03:06:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.3294117647058825) internal successors, (198), 85 states have internal predecessors, (198), 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) [2022-12-14 03:06:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 198 transitions. [2022-12-14 03:06:38,889 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 198 transitions. Word has length 25 [2022-12-14 03:06:38,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:38,890 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 198 transitions. [2022-12-14 03:06:38,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-12-14 03:06:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 198 transitions. [2022-12-14 03:06:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 03:06:38,891 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:06:38,891 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:38,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 03:06:38,891 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-12-14 03:06:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:06:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash 615107199, now seen corresponding path program 1 times [2022-12-14 03:06:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:06:38,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344248771] [2022-12-14 03:06:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:06:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:06:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 03:06:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 03:06:39,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 03:06:39,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344248771] [2022-12-14 03:06:39,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344248771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 03:06:39,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 03:06:39,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 03:06:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679995886] [2022-12-14 03:06:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 03:06:39,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 03:06:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 03:06:39,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 03:06:39,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 03:06:39,044 INFO L87 Difference]: Start difference. First operand 86 states and 198 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-12-14 03:06:39,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 03:06:39,078 INFO L93 Difference]: Finished difference Result 85 states and 197 transitions. [2022-12-14 03:06:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 03:06:39,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 25 [2022-12-14 03:06:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 03:06:39,079 INFO L225 Difference]: With dead ends: 85 [2022-12-14 03:06:39,079 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 03:06:39,079 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 [2022-12-14 03:06:39,080 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 20 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 03:06:39,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 03:06:39,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 03:06:39,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 03:06:39,081 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) [2022-12-14 03:06:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 03:06:39,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-12-14 03:06:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 03:06:39,081 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 03:06:39,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-12-14 03:06:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 03:06:39,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 03:06:39,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2022-12-14 03:06:39,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-12-14 03:06:39,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-12-14 03:06:39,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-12-14 03:06:39,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-12-14 03:06:39,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 03:06:39,086 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:06:39,090 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 03:06:39,090 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 03:06:39,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:06:39 BasicIcfg [2022-12-14 03:06:39,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 03:06:39,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 03:06:39,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 03:06:39,092 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 03:06:39,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:06:29" (3/4) ... [2022-12-14 03:06:39,094 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 03:06:39,099 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-14 03:06:39,099 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-14 03:06:39,101 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-14 03:06:39,102 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 03:06:39,102 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 03:06:39,102 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 03:06:39,126 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 03:06:39,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 03:06:39,127 INFO L158 Benchmark]: Toolchain (without parser) took 10087.71ms. Allocated memory was 115.3MB in the beginning and 180.4MB in the end (delta: 65.0MB). Free memory was 66.9MB in the beginning and 101.0MB in the end (delta: -34.1MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2022-12-14 03:06:39,128 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:06:39,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.54ms. Allocated memory is still 115.3MB. Free memory was 66.9MB in the beginning and 55.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 03:06:39,128 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.69ms. Allocated memory is still 115.3MB. Free memory was 55.2MB in the beginning and 53.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:06:39,128 INFO L158 Benchmark]: Boogie Preprocessor took 29.23ms. Allocated memory is still 115.3MB. Free memory was 53.1MB in the beginning and 51.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:06:39,129 INFO L158 Benchmark]: RCFGBuilder took 472.84ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 51.5MB in the beginning and 117.2MB in the end (delta: -65.7MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2022-12-14 03:06:39,129 INFO L158 Benchmark]: TraceAbstraction took 9279.05ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 116.7MB in the beginning and 104.1MB in the end (delta: 12.6MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-12-14 03:06:39,129 INFO L158 Benchmark]: Witness Printer took 34.65ms. Allocated memory is still 180.4MB. Free memory was 104.1MB in the beginning and 101.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 03:06:39,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.54ms. Allocated memory is still 115.3MB. Free memory was 66.9MB in the beginning and 55.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.69ms. Allocated memory is still 115.3MB. Free memory was 55.2MB in the beginning and 53.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.23ms. Allocated memory is still 115.3MB. Free memory was 53.1MB in the beginning and 51.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 472.84ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 51.5MB in the beginning and 117.2MB in the end (delta: -65.7MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9279.05ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 116.7MB in the beginning and 104.1MB in the end (delta: 12.6MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 34.65ms. Allocated memory is still 180.4MB. Free memory was 104.1MB in the beginning and 101.0MB 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: 5.0s, 219 PlacesBefore, 38 PlacesAfterwards, 231 TransitionsBefore, 37 TransitionsAfterwards, 4212 CoEnabledTransitionPairs, 7 FixpointIterations, 129 TrivialSequentialCompositions, 79 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 20 ConcurrentYvCompositions, 13 ChoiceCompositions, 266 TotalNumberOfCompositions, 5375 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4375, independent: 4297, independent conditional: 0, independent unconditional: 4297, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3038, independent: 3010, independent conditional: 0, independent unconditional: 3010, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3038, independent: 3010, independent conditional: 0, independent unconditional: 3010, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4375, independent: 1287, independent conditional: 0, independent unconditional: 1287, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 3038, unknown conditional: 0, unknown unconditional: 3038] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: 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, 285 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 9.1s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 385 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 385 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 975 IncrementalHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 14 mSDtfsCounter, 975 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=6, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 693 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 263 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 283 ConstructedInterpolants, 0 QuantifiedInterpolants, 595 SizeOfPredicates, 3 NumberOfNonLiveVariables, 913 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 169/225 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 03:06:39,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80e4b66-5a2e-4760-aafd-e2f284a762c2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE