./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/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_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/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_10c20833-ef2e-44d9-b3c1-c440cb85aafd/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 327bb4ad7f981d20a6e5212aac300a9249d1857b0280531d57d587d5a0195c5f --- 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 12:13:24,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:13:24,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:13:24,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:13:24,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:13:24,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:13:24,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:13:24,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:13:24,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:13:24,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:13:24,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:13:24,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:13:24,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:13:24,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:13:24,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:13:24,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:13:24,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:13:24,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:13:24,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:13:24,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:13:24,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:13:24,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:13:24,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:13:24,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:13:24,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:13:24,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:13:24,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:13:24,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:13:24,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:13:24,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:13:24,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:13:24,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:13:24,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:13:24,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:13:24,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:13:24,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:13:24,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:13:24,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:13:24,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:13:24,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:13:24,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:13:24,570 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 12:13:24,589 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:13:24,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:13:24,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:13:24,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:13:24,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:13:24,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:13:24,591 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:13:24,591 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:13:24,591 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:13:24,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:13:24,591 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:13:24,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:13:24,592 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:13:24,592 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:13:24,592 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:13:24,592 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:13:24,592 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:13:24,592 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:13:24,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:13:24,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:13:24,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:13:24,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:13:24,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:13:24,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:13:24,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:13:24,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:13:24,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:13:24,594 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 12:13:24,595 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:13:24,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:13:24,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:13:24,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:13:24,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:13:24,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:13:24,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:13:24,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:13:24,596 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:13:24,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:13:24,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:13:24,597 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:13:24,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:13:24,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:13:24,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:13:24,597 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_10c20833-ef2e-44d9-b3c1-c440cb85aafd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327bb4ad7f981d20a6e5212aac300a9249d1857b0280531d57d587d5a0195c5f [2022-12-14 12:13:24,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:13:24,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:13:24,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:13:24,781 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:13:24,781 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:13:24,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2022-12-14 12:13:27,373 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:13:27,551 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:13:27,551 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2022-12-14 12:13:27,559 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/data/287c6ac31/e1e814187bb14595a824d99a35c41f43/FLAG3238f20ae [2022-12-14 12:13:27,952 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/data/287c6ac31/e1e814187bb14595a824d99a35c41f43 [2022-12-14 12:13:27,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:13:27,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:13:27,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:13:27,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:13:27,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:13:27,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:13:27" (1/1) ... [2022-12-14 12:13:27,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc6d07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:27, skipping insertion in model container [2022-12-14 12:13:27,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:13:27" (1/1) ... [2022-12-14 12:13:27,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:13:27,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:13:28,082 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_10c20833-ef2e-44d9-b3c1-c440cb85aafd/sv-benchmarks/c/systemc/token_ring.01.cil-2.c[671,684] [2022-12-14 12:13:28,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:13:28,122 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:13:28,130 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_10c20833-ef2e-44d9-b3c1-c440cb85aafd/sv-benchmarks/c/systemc/token_ring.01.cil-2.c[671,684] [2022-12-14 12:13:28,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:13:28,155 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:13:28,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28 WrapperNode [2022-12-14 12:13:28,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:13:28,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:13:28,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:13:28,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:13:28,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,183 INFO L138 Inliner]: procedures = 30, calls = 35, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 224 [2022-12-14 12:13:28,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:13:28,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:13:28,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:13:28,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:13:28,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:13:28,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:13:28,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:13:28,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:13:28,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (1/1) ... [2022-12-14 12:13:28,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:13:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:13:28,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:13:28,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:13:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:13:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-14 12:13:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-14 12:13:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 12:13:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 12:13:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 12:13:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 12:13:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 12:13:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 12:13:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 12:13:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 12:13:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 12:13:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 12:13:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:13:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 12:13:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 12:13:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:13:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:13:28,329 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:13:28,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:13:28,581 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:13:28,671 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:13:28,671 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 12:13:28,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:13:28 BoogieIcfgContainer [2022-12-14 12:13:28,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:13:28,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:13:28,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:13:28,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:13:28,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:13:27" (1/3) ... [2022-12-14 12:13:28,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3700493f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:13:28, skipping insertion in model container [2022-12-14 12:13:28,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:28" (2/3) ... [2022-12-14 12:13:28,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3700493f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:13:28, skipping insertion in model container [2022-12-14 12:13:28,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:13:28" (3/3) ... [2022-12-14 12:13:28,689 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2022-12-14 12:13:28,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:13:28,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 12:13:28,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:13:28,745 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;@73924a6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:13:28,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 12:13:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 58 states have internal predecessors, (77), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-14 12:13:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 12:13:28,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:28,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:28,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:28,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash -961317480, now seen corresponding path program 1 times [2022-12-14 12:13:28,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:28,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973343062] [2022-12-14 12:13:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:28,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:28,954 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 12:13:28,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:28,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973343062] [2022-12-14 12:13:28,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973343062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:28,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:28,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:13:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647940471] [2022-12-14 12:13:28,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:13:28,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:28,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:13:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:13:28,990 INFO L87 Difference]: Start difference. First operand has 80 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 58 states have internal predecessors, (77), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 12:13:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:29,190 INFO L93 Difference]: Finished difference Result 214 states and 301 transitions. [2022-12-14 12:13:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:13:29,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2022-12-14 12:13:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:29,199 INFO L225 Difference]: With dead ends: 214 [2022-12-14 12:13:29,199 INFO L226 Difference]: Without dead ends: 132 [2022-12-14 12:13:29,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:13:29,204 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 168 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:29,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 232 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:13:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-12-14 12:13:29,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2022-12-14 12:13:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 87 states have (on average 1.367816091954023) internal successors, (119), 92 states have internal predecessors, (119), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-12-14 12:13:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2022-12-14 12:13:29,243 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 32 [2022-12-14 12:13:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:29,244 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2022-12-14 12:13:29,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 12:13:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2022-12-14 12:13:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 12:13:29,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:29,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:29,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:13:29,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash -942653120, now seen corresponding path program 1 times [2022-12-14 12:13:29,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:29,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269313542] [2022-12-14 12:13:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:29,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:29,403 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 12:13:29,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:29,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269313542] [2022-12-14 12:13:29,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269313542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:29,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:29,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 12:13:29,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602677379] [2022-12-14 12:13:29,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:29,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:13:29,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:13:29,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:13:29,407 INFO L87 Difference]: Start difference. First operand 129 states and 171 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 12:13:29,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:29,649 INFO L93 Difference]: Finished difference Result 331 states and 436 transitions. [2022-12-14 12:13:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:13:29,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-12-14 12:13:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:29,654 INFO L225 Difference]: With dead ends: 331 [2022-12-14 12:13:29,654 INFO L226 Difference]: Without dead ends: 208 [2022-12-14 12:13:29,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:13:29,656 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 201 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:29,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 277 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:13:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-12-14 12:13:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 192. [2022-12-14 12:13:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 136 states have internal predecessors, (176), 37 states have call successors, (37), 20 states have call predecessors, (37), 20 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-12-14 12:13:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 250 transitions. [2022-12-14 12:13:29,688 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 250 transitions. Word has length 33 [2022-12-14 12:13:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:29,688 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 250 transitions. [2022-12-14 12:13:29,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 12:13:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 250 transitions. [2022-12-14 12:13:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 12:13:29,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:29,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:13:29,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:29,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash 133387324, now seen corresponding path program 1 times [2022-12-14 12:13:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:29,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720037384] [2022-12-14 12:13:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:29,743 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 12:13:29,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:29,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720037384] [2022-12-14 12:13:29,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720037384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:29,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:29,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:13:29,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124162447] [2022-12-14 12:13:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:29,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:13:29,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:29,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:13:29,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:29,746 INFO L87 Difference]: Start difference. First operand 192 states and 250 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 12:13:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:29,818 INFO L93 Difference]: Finished difference Result 538 states and 702 transitions. [2022-12-14 12:13:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:13:29,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-12-14 12:13:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:29,821 INFO L225 Difference]: With dead ends: 538 [2022-12-14 12:13:29,821 INFO L226 Difference]: Without dead ends: 351 [2022-12-14 12:13:29,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:29,824 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 70 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:29,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 175 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:13:29,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-12-14 12:13:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 346. [2022-12-14 12:13:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 239 states have (on average 1.292887029288703) internal successors, (309), 245 states have internal predecessors, (309), 65 states have call successors, (65), 38 states have call predecessors, (65), 38 states have return successors, (65), 63 states have call predecessors, (65), 65 states have call successors, (65) [2022-12-14 12:13:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 439 transitions. [2022-12-14 12:13:29,865 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 439 transitions. Word has length 34 [2022-12-14 12:13:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:29,866 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 439 transitions. [2022-12-14 12:13:29,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 12:13:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 439 transitions. [2022-12-14 12:13:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 12:13:29,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:29,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:29,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:13:29,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:29,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash -25420651, now seen corresponding path program 1 times [2022-12-14 12:13:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:29,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974955746] [2022-12-14 12:13:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:13:29,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:29,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974955746] [2022-12-14 12:13:29,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974955746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:29,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:29,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:13:29,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169721907] [2022-12-14 12:13:29,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:29,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:13:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:29,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:13:29,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:29,912 INFO L87 Difference]: Start difference. First operand 346 states and 439 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 12:13:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:29,983 INFO L93 Difference]: Finished difference Result 637 states and 816 transitions. [2022-12-14 12:13:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:13:29,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-12-14 12:13:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:29,987 INFO L225 Difference]: With dead ends: 637 [2022-12-14 12:13:29,987 INFO L226 Difference]: Without dead ends: 451 [2022-12-14 12:13:29,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:29,990 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 44 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 211 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 12:13:29,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 211 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:13:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-12-14 12:13:30,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 372. [2022-12-14 12:13:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 259 states have (on average 1.2934362934362935) internal successors, (335), 265 states have internal predecessors, (335), 68 states have call successors, (68), 41 states have call predecessors, (68), 41 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2022-12-14 12:13:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 471 transitions. [2022-12-14 12:13:30,026 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 471 transitions. Word has length 46 [2022-12-14 12:13:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:30,026 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 471 transitions. [2022-12-14 12:13:30,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 12:13:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 471 transitions. [2022-12-14 12:13:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 12:13:30,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:30,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:30,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:13:30,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1772192429, now seen corresponding path program 1 times [2022-12-14 12:13:30,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:30,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353940955] [2022-12-14 12:13:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 12:13:30,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:30,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353940955] [2022-12-14 12:13:30,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353940955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:30,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:30,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 12:13:30,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360846899] [2022-12-14 12:13:30,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:30,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:13:30,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:13:30,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:13:30,210 INFO L87 Difference]: Start difference. First operand 372 states and 471 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 12:13:30,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:30,451 INFO L93 Difference]: Finished difference Result 916 states and 1159 transitions. [2022-12-14 12:13:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:13:30,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 57 [2022-12-14 12:13:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:30,454 INFO L225 Difference]: With dead ends: 916 [2022-12-14 12:13:30,454 INFO L226 Difference]: Without dead ends: 550 [2022-12-14 12:13:30,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:13:30,456 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 189 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:30,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 253 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:13:30,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-12-14 12:13:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 524. [2022-12-14 12:13:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 365 states have (on average 1.273972602739726) internal successors, (465), 372 states have internal predecessors, (465), 96 states have call successors, (96), 59 states have call predecessors, (96), 59 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-12-14 12:13:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 657 transitions. [2022-12-14 12:13:30,489 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 657 transitions. Word has length 57 [2022-12-14 12:13:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:30,489 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 657 transitions. [2022-12-14 12:13:30,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 12:13:30,489 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 657 transitions. [2022-12-14 12:13:30,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 12:13:30,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:30,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:30,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:13:30,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:30,491 INFO L85 PathProgramCache]: Analyzing trace with hash 932984815, now seen corresponding path program 1 times [2022-12-14 12:13:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:30,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303646249] [2022-12-14 12:13:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:30,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 12:13:30,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:30,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303646249] [2022-12-14 12:13:30,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303646249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:30,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:30,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:13:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833686888] [2022-12-14 12:13:30,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:30,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:13:30,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:13:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:30,534 INFO L87 Difference]: Start difference. First operand 524 states and 657 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 12:13:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:30,610 INFO L93 Difference]: Finished difference Result 940 states and 1187 transitions. [2022-12-14 12:13:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:13:30,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-12-14 12:13:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:30,613 INFO L225 Difference]: With dead ends: 940 [2022-12-14 12:13:30,613 INFO L226 Difference]: Without dead ends: 610 [2022-12-14 12:13:30,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:30,614 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 32 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:30,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 193 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:13:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-12-14 12:13:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 562. [2022-12-14 12:13:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 395 states have (on average 1.2759493670886075) internal successors, (504), 402 states have internal predecessors, (504), 100 states have call successors, (100), 63 states have call predecessors, (100), 63 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-14 12:13:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 704 transitions. [2022-12-14 12:13:30,657 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 704 transitions. Word has length 58 [2022-12-14 12:13:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:30,657 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 704 transitions. [2022-12-14 12:13:30,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 12:13:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 704 transitions. [2022-12-14 12:13:30,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 12:13:30,660 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:30,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:30,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:13:30,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:30,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:30,661 INFO L85 PathProgramCache]: Analyzing trace with hash 270352506, now seen corresponding path program 1 times [2022-12-14 12:13:30,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:30,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578882258] [2022-12-14 12:13:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 12:13:30,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578882258] [2022-12-14 12:13:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578882258] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:30,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:30,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:13:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971779030] [2022-12-14 12:13:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:13:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:13:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:13:30,697 INFO L87 Difference]: Start difference. First operand 562 states and 704 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 12:13:30,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:30,818 INFO L93 Difference]: Finished difference Result 959 states and 1228 transitions. [2022-12-14 12:13:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:13:30,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-12-14 12:13:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:30,821 INFO L225 Difference]: With dead ends: 959 [2022-12-14 12:13:30,821 INFO L226 Difference]: Without dead ends: 567 [2022-12-14 12:13:30,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:13:30,822 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 155 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:30,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 230 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:13:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-12-14 12:13:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 560. [2022-12-14 12:13:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 393 states have (on average 1.2366412213740459) internal successors, (486), 400 states have internal predecessors, (486), 100 states have call successors, (100), 63 states have call predecessors, (100), 63 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-14 12:13:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 686 transitions. [2022-12-14 12:13:30,852 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 686 transitions. Word has length 62 [2022-12-14 12:13:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:30,852 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 686 transitions. [2022-12-14 12:13:30,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 12:13:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 686 transitions. [2022-12-14 12:13:30,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 12:13:30,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:30,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:30,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:13:30,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:30,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1549677241, now seen corresponding path program 1 times [2022-12-14 12:13:30,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:30,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364046725] [2022-12-14 12:13:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:30,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 12:13:30,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:30,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364046725] [2022-12-14 12:13:30,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364046725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:30,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:30,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:13:30,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739810131] [2022-12-14 12:13:30,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:30,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:13:30,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:30,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:13:30,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:30,898 INFO L87 Difference]: Start difference. First operand 560 states and 686 transitions. Second operand has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 12:13:30,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:30,963 INFO L93 Difference]: Finished difference Result 560 states and 686 transitions. [2022-12-14 12:13:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:13:30,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-12-14 12:13:30,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:30,967 INFO L225 Difference]: With dead ends: 560 [2022-12-14 12:13:30,967 INFO L226 Difference]: Without dead ends: 559 [2022-12-14 12:13:30,968 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 12:13:30,968 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:30,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 80 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:13:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-12-14 12:13:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-12-14 12:13:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 393 states have (on average 1.2290076335877862) internal successors, (483), 399 states have internal predecessors, (483), 100 states have call successors, (100), 63 states have call predecessors, (100), 63 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-14 12:13:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 683 transitions. [2022-12-14 12:13:31,001 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 683 transitions. Word has length 62 [2022-12-14 12:13:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:31,001 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 683 transitions. [2022-12-14 12:13:31,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 12:13:31,002 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 683 transitions. [2022-12-14 12:13:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 12:13:31,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:31,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:31,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 12:13:31,002 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 12:13:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:31,003 INFO L85 PathProgramCache]: Analyzing trace with hash 795354525, now seen corresponding path program 1 times [2022-12-14 12:13:31,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:31,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743580730] [2022-12-14 12:13:31,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:31,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:13:31,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:13:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:13:31,043 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:13:31,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:13:31,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 12:13:31,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 12:13:31,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 12:13:31,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 12:13:31,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 12:13:31,049 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:31,052 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:13:31,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:13:31 BoogieIcfgContainer [2022-12-14 12:13:31,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:13:31,087 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:13:31,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:13:31,087 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:13:31,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:13:28" (3/4) ... [2022-12-14 12:13:31,089 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 12:13:31,131 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 12:13:31,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:13:31,132 INFO L158 Benchmark]: Toolchain (without parser) took 3174.23ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 126.3MB in the beginning and 91.9MB in the end (delta: 34.4MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2022-12-14 12:13:31,132 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:13:31,133 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.22ms. Allocated memory is still 163.6MB. Free memory was 125.8MB in the beginning and 113.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 12:13:31,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.50ms. Allocated memory is still 163.6MB. Free memory was 112.8MB in the beginning and 111.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:13:31,133 INFO L158 Benchmark]: Boogie Preprocessor took 18.21ms. Allocated memory is still 163.6MB. Free memory was 111.1MB in the beginning and 109.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:13:31,133 INFO L158 Benchmark]: RCFGBuilder took 471.52ms. Allocated memory is still 163.6MB. Free memory was 109.1MB in the beginning and 130.4MB in the end (delta: -21.3MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2022-12-14 12:13:31,134 INFO L158 Benchmark]: TraceAbstraction took 2402.80ms. Allocated memory is still 197.1MB. Free memory was 166.5MB in the beginning and 98.2MB in the end (delta: 68.3MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2022-12-14 12:13:31,134 INFO L158 Benchmark]: Witness Printer took 44.74ms. Allocated memory is still 197.1MB. Free memory was 98.2MB in the beginning and 91.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 12:13:31,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.22ms. Allocated memory is still 163.6MB. Free memory was 125.8MB in the beginning and 113.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.50ms. Allocated memory is still 163.6MB. Free memory was 112.8MB in the beginning and 111.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.21ms. Allocated memory is still 163.6MB. Free memory was 111.1MB in the beginning and 109.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.52ms. Allocated memory is still 163.6MB. Free memory was 109.1MB in the beginning and 130.4MB in the end (delta: -21.3MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2402.80ms. Allocated memory is still 197.1MB. Free memory was 166.5MB in the beginning and 98.2MB in the end (delta: 68.3MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. * Witness Printer took 44.74ms. Allocated memory is still 197.1MB. Free memory was 98.2MB in the beginning and 91.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - CounterExampleResult [Line: 119]: integer overflow possible integer overflow possible We found a FailurePath: [L24] int m_pc = 0; [L25] int t1_pc = 0; [L26] int m_st ; [L27] int t1_st ; [L28] int m_i ; [L29] int t1_i ; [L30] int M_E = 2; [L31] int T1_E = 2; [L32] int E_M = 2; [L33] int E_1 = 2; [L37] int token ; [L39] int local ; [L485] int __retres1 ; [L489] CALL init_model() [L400] m_i = 1 [L401] t1_i = 1 [L489] RET init_model() [L490] CALL start_simulation() [L426] int kernel_st ; [L427] int tmp ; [L428] int tmp___0 ; [L432] kernel_st = 0 VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L433] FCALL update_channels() VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L434] CALL init_threads() [L182] COND TRUE m_i == 1 [L183] m_st = 0 [L187] COND TRUE t1_i == 1 [L188] t1_st = 0 [L434] RET init_threads() [L435] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L271] COND FALSE !(M_E == 0) [L276] COND FALSE !(T1_E == 0) [L281] COND FALSE !(E_M == 0) [L286] COND FALSE !(E_1 == 0) [L435] RET fire_delta_events() VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L436] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L324] int tmp ; [L325] int tmp___0 ; [L329] CALL, EXPR is_master_triggered() [L133] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L136] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L146] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L148] return (__retres1); [L329] RET, EXPR is_master_triggered() [L329] tmp = is_master_triggered() [L331] COND FALSE !(\read(tmp)) [L337] CALL, EXPR is_transmit1_triggered() [L152] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L155] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L165] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L167] return (__retres1); [L337] RET, EXPR is_transmit1_triggered() [L337] tmp___0 = is_transmit1_triggered() [L339] COND FALSE !(\read(tmp___0)) [L436] RET activate_threads() VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L437] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L299] COND FALSE !(M_E == 1) [L304] COND FALSE !(T1_E == 1) [L309] COND FALSE !(E_M == 1) [L314] COND FALSE !(E_1 == 1) [L437] RET reset_delta_events() VAL [E_1=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L440] COND TRUE 1 [L443] kernel_st = 1 [L444] CALL eval() [L218] int tmp ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L222] COND TRUE 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L225] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L197] int __retres1 ; [L200] COND TRUE m_st == 0 [L201] __retres1 = 1 [L213] return (__retres1); [L225] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L225] tmp = exists_runnable_thread() [L227] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L232] COND TRUE m_st == 0 [L233] int tmp_ndt_1; [L234] tmp_ndt_1 = __VERIFIER_nondet_int() [L235] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0, token=0] [L246] COND TRUE t1_st == 0 [L247] int tmp_ndt_2; [L248] tmp_ndt_2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp_ndt_2) [L251] t1_st = 1 [L252] CALL transmit1() [L100] COND TRUE t1_pc == 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L111] COND TRUE 1 [L113] t1_pc = 1 [L114] t1_st = 2 [L252] RET transmit1() [L222] COND TRUE 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L225] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L197] int __retres1 ; [L200] COND TRUE m_st == 0 [L201] __retres1 = 1 [L213] return (__retres1); [L225] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L225] tmp = exists_runnable_thread() [L227] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L232] COND TRUE m_st == 0 [L233] int tmp_ndt_1; [L234] tmp_ndt_1 = __VERIFIER_nondet_int() [L235] COND TRUE \read(tmp_ndt_1) [L237] m_st = 1 [L238] CALL master() [L42] int tmp_var = __VERIFIER_nondet_int(); [L44] COND TRUE m_pc == 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L55] COND TRUE 1 [L58] token = __VERIFIER_nondet_int() [L59] local = token [L60] E_1 = 1 VAL [E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=2147483647] [L61] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L353] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L324] int tmp ; [L325] int tmp___0 ; [L329] CALL, EXPR is_master_triggered() [L133] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L136] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L146] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=0, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L148] return (__retres1); [L329] RET, EXPR is_master_triggered() [L329] tmp = is_master_triggered() [L331] COND FALSE !(\read(tmp)) [L337] CALL, EXPR is_transmit1_triggered() [L152] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L155] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L156] COND TRUE E_1 == 1 [L157] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=1, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=2147483647] [L167] return (__retres1); [L337] RET, EXPR is_transmit1_triggered() [L337] tmp___0 = is_transmit1_triggered() [L339] COND TRUE \read(tmp___0) [L340] t1_st = 0 [L353] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, token=2147483647] [L61] RET immediate_notify() VAL [E_1=1, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=2147483647] [L62] E_1 = 2 [L63] m_pc = 1 [L64] m_st = 2 VAL [E_1=2, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=2147483647] [L238] RET master() [L246] COND TRUE t1_st == 0 [L247] int tmp_ndt_2; [L248] tmp_ndt_2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp_ndt_2) [L251] t1_st = 1 [L252] CALL transmit1() [L100] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=2147483647] [L103] COND TRUE t1_pc == 1 VAL [E_1=2, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=2147483647] [L119] token += 1 VAL [E_1=2, E_M=2, local=2147483647, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=2147483647] - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 80 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 963 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 946 mSDsluCounter, 1651 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 757 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 725 IncrementalHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 894 mSDtfsCounter, 725 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=6, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 184 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 447 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 82/82 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-14 12:13:31,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c20833-ef2e-44d9-b3c1-c440cb85aafd/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)