./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7adc5be84218941c02109a6f05aa2044beb278121fd387aba807705fdb759027 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:27:19,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:27:19,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:27:19,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:27:19,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:27:19,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:27:19,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:27:19,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:27:19,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:27:19,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:27:19,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:27:19,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:27:19,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:27:19,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:27:19,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:27:19,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:27:19,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:27:19,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:27:19,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:27:19,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:27:19,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:27:19,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:27:19,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:27:19,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:27:19,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:27:19,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:27:19,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:27:19,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:27:19,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:27:19,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:27:19,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:27:19,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:27:19,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:27:19,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:27:19,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:27:19,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:27:19,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:27:19,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:27:19,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:27:19,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:27:19,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:27:19,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:27:19,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:27:19,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:27:19,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:27:19,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:27:19,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:27:19,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:27:19,657 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:27:19,658 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:27:19,658 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:27:19,658 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:27:19,658 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:27:19,658 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:27:19,659 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:27:19,659 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:27:19,659 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:27:19,659 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:27:19,659 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:27:19,660 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:27:19,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:27:19,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:27:19,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:27:19,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:27:19,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:27:19,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:27:19,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:27:19,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:27:19,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:27:19,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:27:19,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:27:19,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:27:19,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:27:19,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:27:19,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:27:19,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:27:19,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:27:19,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:27:19,664 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:27:19,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:27:19,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:27:19,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:27:19,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:27:19,665 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7adc5be84218941c02109a6f05aa2044beb278121fd387aba807705fdb759027 [2021-11-25 19:27:19,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:27:19,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:27:19,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:27:19,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:27:19,944 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:27:19,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c [2021-11-25 19:27:20,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/data/f4c7fdc36/dabee030a6a045d0840fbc0cf41d76bb/FLAG1ec6d37d4 [2021-11-25 19:27:21,187 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:27:21,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c [2021-11-25 19:27:21,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/data/f4c7fdc36/dabee030a6a045d0840fbc0cf41d76bb/FLAG1ec6d37d4 [2021-11-25 19:27:21,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/data/f4c7fdc36/dabee030a6a045d0840fbc0cf41d76bb [2021-11-25 19:27:21,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:27:21,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:27:21,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:27:21,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:27:21,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:27:21,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:27:21" (1/1) ... [2021-11-25 19:27:21,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b439f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:21, skipping insertion in model container [2021-11-25 19:27:21,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:27:21" (1/1) ... [2021-11-25 19:27:21,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:27:21,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:27:23,987 WARN L230 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_1c385ff4-2189-43af-aa10-fffaa3059121/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c[380323,380336] [2021-11-25 19:27:24,021 WARN L230 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_1c385ff4-2189-43af-aa10-fffaa3059121/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c[383339,383352] [2021-11-25 19:27:24,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:27:24,208 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:27:25,489 WARN L230 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_1c385ff4-2189-43af-aa10-fffaa3059121/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c[380323,380336] [2021-11-25 19:27:25,501 WARN L230 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_1c385ff4-2189-43af-aa10-fffaa3059121/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c[383339,383352] [2021-11-25 19:27:25,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:27:25,603 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:27:25,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25 WrapperNode [2021-11-25 19:27:25,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:27:25,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:27:25,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:27:25,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:27:25,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:25,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,186 INFO L137 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12566 [2021-11-25 19:27:26,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:27:26,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:27:26,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:27:26,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:27:26,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:27:26,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:27:26,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:27:26,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:27:26,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (1/1) ... [2021-11-25 19:27:26,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:27:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:27:26,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:27:26,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:27:27,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:27:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-25 19:27:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-25 19:27:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-25 19:27:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-25 19:27:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-25 19:27:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-25 19:27:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-25 19:27:27,030 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-25 19:27:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-25 19:27:27,030 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-25 19:27:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-25 19:27:27,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-25 19:27:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:27:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-25 19:27:27,031 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-25 19:27:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:27:27,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:27:27,187 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:27:27,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:27:34,794 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:27:37,115 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:27:37,116 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 19:27:37,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:37 BoogieIcfgContainer [2021-11-25 19:27:37,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:27:37,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:27:37,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:27:37,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:27:37,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:27:21" (1/3) ... [2021-11-25 19:27:37,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a0d375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:27:37, skipping insertion in model container [2021-11-25 19:27:37,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:27:25" (2/3) ... [2021-11-25 19:27:37,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a0d375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:27:37, skipping insertion in model container [2021-11-25 19:27:37,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:37" (3/3) ... [2021-11-25 19:27:37,137 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.01.cil-2.c [2021-11-25 19:27:37,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:27:37,144 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 19:27:37,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:27:37,243 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:27:37,243 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 19:27:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 1716 states, 1689 states have (on average 1.9792776791000593) internal successors, (3343), 1694 states have internal predecessors, (3343), 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) [2021-11-25 19:27:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:27:37,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:37,328 INFO L514 BasicCegarLoop]: 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, 1] [2021-11-25 19:27:37,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:37,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1699445636, now seen corresponding path program 1 times [2021-11-25 19:27:37,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:37,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946162252] [2021-11-25 19:27:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:37,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:37,688 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946162252] [2021-11-25 19:27:37,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946162252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:37,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:37,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:27:37,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659090328] [2021-11-25 19:27:37,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:37,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:27:37,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:37,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:27:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:27:37,781 INFO L87 Difference]: Start difference. First operand has 1716 states, 1689 states have (on average 1.9792776791000593) internal successors, (3343), 1694 states have internal predecessors, (3343), 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 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:27:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:38,632 INFO L93 Difference]: Finished difference Result 3481 states and 6831 transitions. [2021-11-25 19:27:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:27:38,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2021-11-25 19:27:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:38,659 INFO L225 Difference]: With dead ends: 3481 [2021-11-25 19:27:38,659 INFO L226 Difference]: Without dead ends: 1764 [2021-11-25 19:27:38,667 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:27:38,671 INFO L933 BasicCegarLoop]: 3188 mSDtfsCounter, 3424 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:38,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3424 Valid, 6320 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:27:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-11-25 19:27:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1763. [2021-11-25 19:27:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1721 states have (on average 1.9604880883207438) internal successors, (3374), 1725 states have internal predecessors, (3374), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-25 19:27:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 3428 transitions. [2021-11-25 19:27:38,804 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 3428 transitions. Word has length 35 [2021-11-25 19:27:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:38,804 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 3428 transitions. [2021-11-25 19:27:38,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:27:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 3428 transitions. [2021-11-25 19:27:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 19:27:38,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:38,810 INFO L514 BasicCegarLoop]: 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, 1, 1] [2021-11-25 19:27:38,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:27:38,810 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:38,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1680904794, now seen corresponding path program 1 times [2021-11-25 19:27:38,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:38,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579310662] [2021-11-25 19:27:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:38,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:27:39,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:39,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579310662] [2021-11-25 19:27:39,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579310662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:39,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:39,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:27:39,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006868380] [2021-11-25 19:27:39,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:39,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:27:39,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:27:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:27:39,024 INFO L87 Difference]: Start difference. First operand 1763 states and 3428 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:27:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:39,893 INFO L93 Difference]: Finished difference Result 1995 states and 3731 transitions. [2021-11-25 19:27:39,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:27:39,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 60 [2021-11-25 19:27:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:39,914 INFO L225 Difference]: With dead ends: 1995 [2021-11-25 19:27:39,914 INFO L226 Difference]: Without dead ends: 1879 [2021-11-25 19:27:39,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:27:39,927 INFO L933 BasicCegarLoop]: 3151 mSDtfsCounter, 3441 mSDsluCounter, 6665 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 9375 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:39,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3450 Valid, 9375 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:27:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-11-25 19:27:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1863. [2021-11-25 19:27:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1789 states have (on average 1.9334823923979878) internal successors, (3459), 1794 states have internal predecessors, (3459), 48 states have call successors, (48), 25 states have call predecessors, (48), 24 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-25 19:27:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 3553 transitions. [2021-11-25 19:27:40,021 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 3553 transitions. Word has length 60 [2021-11-25 19:27:40,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:40,023 INFO L470 AbstractCegarLoop]: Abstraction has 1863 states and 3553 transitions. [2021-11-25 19:27:40,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-25 19:27:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 3553 transitions. [2021-11-25 19:27:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 19:27:40,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:40,035 INFO L514 BasicCegarLoop]: 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, 1, 1, 1] [2021-11-25 19:27:40,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:27:40,035 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:40,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1526538355, now seen corresponding path program 1 times [2021-11-25 19:27:40,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:40,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861843473] [2021-11-25 19:27:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:40,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:27:40,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861843473] [2021-11-25 19:27:40,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861843473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:40,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:40,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:27:40,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625779920] [2021-11-25 19:27:40,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:40,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:40,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:40,136 INFO L87 Difference]: Start difference. First operand 1863 states and 3553 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:27:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:40,583 INFO L93 Difference]: Finished difference Result 2031 states and 3769 transitions. [2021-11-25 19:27:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:40,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2021-11-25 19:27:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:40,601 INFO L225 Difference]: With dead ends: 2031 [2021-11-25 19:27:40,602 INFO L226 Difference]: Without dead ends: 1913 [2021-11-25 19:27:40,606 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:27:40,613 INFO L933 BasicCegarLoop]: 3163 mSDtfsCounter, 27 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6296 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:40,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 6296 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:27:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-11-25 19:27:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1883. [2021-11-25 19:27:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1805 states have (on average 1.9285318559556788) internal successors, (3481), 1810 states have internal predecessors, (3481), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-25 19:27:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3579 transitions. [2021-11-25 19:27:40,704 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3579 transitions. Word has length 61 [2021-11-25 19:27:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:40,705 INFO L470 AbstractCegarLoop]: Abstraction has 1883 states and 3579 transitions. [2021-11-25 19:27:40,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 19:27:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3579 transitions. [2021-11-25 19:27:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 19:27:40,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:40,708 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1] [2021-11-25 19:27:40,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:27:40,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash 791889224, now seen corresponding path program 1 times [2021-11-25 19:27:40,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:40,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844724837] [2021-11-25 19:27:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:40,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:27:40,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:40,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844724837] [2021-11-25 19:27:40,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844724837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:40,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:40,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:27:40,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117734331] [2021-11-25 19:27:40,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:40,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:40,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:40,820 INFO L87 Difference]: Start difference. First operand 1883 states and 3579 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:27:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:41,222 INFO L93 Difference]: Finished difference Result 2239 states and 4039 transitions. [2021-11-25 19:27:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2021-11-25 19:27:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:41,237 INFO L225 Difference]: With dead ends: 2239 [2021-11-25 19:27:41,237 INFO L226 Difference]: Without dead ends: 2002 [2021-11-25 19:27:41,239 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:27:41,240 INFO L933 BasicCegarLoop]: 3172 mSDtfsCounter, 3331 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:41,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3331 Valid, 3239 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:27:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2021-11-25 19:27:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1995. [2021-11-25 19:27:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1883 states have (on average 1.8990971853425385) internal successors, (3576), 1889 states have internal predecessors, (3576), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-25 19:27:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3716 transitions. [2021-11-25 19:27:41,323 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3716 transitions. Word has length 77 [2021-11-25 19:27:41,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:41,324 INFO L470 AbstractCegarLoop]: Abstraction has 1995 states and 3716 transitions. [2021-11-25 19:27:41,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:27:41,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3716 transitions. [2021-11-25 19:27:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 19:27:41,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:41,328 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:27:41,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:27:41,328 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:41,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1192857501, now seen corresponding path program 1 times [2021-11-25 19:27:41,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:41,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241915854] [2021-11-25 19:27:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:41,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:27:41,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:41,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241915854] [2021-11-25 19:27:41,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241915854] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:27:41,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427446670] [2021-11-25 19:27:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:41,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:41,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:27:41,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:27:41,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:27:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:41,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:27:41,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:27:41,730 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:27:41,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:27:41,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427446670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:41,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:27:41,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:27:41,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13986136] [2021-11-25 19:27:41,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:41,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:41,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:41,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:27:41,738 INFO L87 Difference]: Start difference. First operand 1995 states and 3716 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:27:42,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:42,209 INFO L93 Difference]: Finished difference Result 2237 states and 4040 transitions. [2021-11-25 19:27:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:42,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 88 [2021-11-25 19:27:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:42,225 INFO L225 Difference]: With dead ends: 2237 [2021-11-25 19:27:42,225 INFO L226 Difference]: Without dead ends: 2001 [2021-11-25 19:27:42,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:27:42,228 INFO L933 BasicCegarLoop]: 3164 mSDtfsCounter, 65 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6288 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:42,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6288 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:27:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2021-11-25 19:27:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1993. [2021-11-25 19:27:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1881 states have (on average 1.894736842105263) internal successors, (3564), 1887 states have internal predecessors, (3564), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-25 19:27:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3704 transitions. [2021-11-25 19:27:42,312 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3704 transitions. Word has length 88 [2021-11-25 19:27:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:42,312 INFO L470 AbstractCegarLoop]: Abstraction has 1993 states and 3704 transitions. [2021-11-25 19:27:42,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:27:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3704 transitions. [2021-11-25 19:27:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 19:27:42,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:42,315 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-11-25 19:27:42,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:27:42,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:42,532 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:42,532 INFO L85 PathProgramCache]: Analyzing trace with hash 737559841, now seen corresponding path program 1 times [2021-11-25 19:27:42,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:42,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908756082] [2021-11-25 19:27:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:42,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:27:42,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:42,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908756082] [2021-11-25 19:27:42,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908756082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:27:42,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183498476] [2021-11-25 19:27:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:42,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:42,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:27:42,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:27:42,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:27:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:42,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:27:42,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:27:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:27:42,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:27:42,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183498476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:42,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:27:42,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:27:42,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103160381] [2021-11-25 19:27:42,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:42,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:42,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:42,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:27:42,976 INFO L87 Difference]: Start difference. First operand 1993 states and 3704 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 19:27:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:43,386 INFO L93 Difference]: Finished difference Result 2287 states and 4066 transitions. [2021-11-25 19:27:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2021-11-25 19:27:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:43,401 INFO L225 Difference]: With dead ends: 2287 [2021-11-25 19:27:43,402 INFO L226 Difference]: Without dead ends: 2054 [2021-11-25 19:27:43,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:27:43,405 INFO L933 BasicCegarLoop]: 3138 mSDtfsCounter, 3341 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3341 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:43,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3341 Valid, 3152 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:27:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-11-25 19:27:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2054. [2021-11-25 19:27:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1932 states have (on average 1.8726708074534162) internal successors, (3618), 1938 states have internal predecessors, (3618), 73 states have call successors, (73), 48 states have call predecessors, (73), 47 states have return successors, (71), 68 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-25 19:27:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3762 transitions. [2021-11-25 19:27:43,508 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3762 transitions. Word has length 88 [2021-11-25 19:27:43,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:43,509 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 3762 transitions. [2021-11-25 19:27:43,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 19:27:43,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3762 transitions. [2021-11-25 19:27:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 19:27:43,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:43,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-11-25 19:27:43,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:27:43,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:43,732 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:43,732 INFO L85 PathProgramCache]: Analyzing trace with hash -959015404, now seen corresponding path program 1 times [2021-11-25 19:27:43,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:43,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547491999] [2021-11-25 19:27:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:43,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:27:43,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:43,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547491999] [2021-11-25 19:27:43,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547491999] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:27:43,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479908241] [2021-11-25 19:27:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:43,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:43,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:27:43,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:27:43,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:27:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:43,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:27:43,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:27:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:27:44,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:27:44,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479908241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:44,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:27:44,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:27:44,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738552638] [2021-11-25 19:27:44,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:44,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:44,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:44,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:44,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:27:44,177 INFO L87 Difference]: Start difference. First operand 2054 states and 3762 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 19:27:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:44,792 INFO L93 Difference]: Finished difference Result 2606 states and 4422 transitions. [2021-11-25 19:27:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:44,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2021-11-25 19:27:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:44,812 INFO L225 Difference]: With dead ends: 2606 [2021-11-25 19:27:44,812 INFO L226 Difference]: Without dead ends: 2199 [2021-11-25 19:27:44,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:27:44,816 INFO L933 BasicCegarLoop]: 3151 mSDtfsCounter, 39 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:44,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 6269 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:27:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-25 19:27:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2090. [2021-11-25 19:27:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1958 states have (on average 1.86414708886619) internal successors, (3650), 1965 states have internal predecessors, (3650), 78 states have call successors, (78), 53 states have call predecessors, (78), 52 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2021-11-25 19:27:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3804 transitions. [2021-11-25 19:27:44,957 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3804 transitions. Word has length 89 [2021-11-25 19:27:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:44,958 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3804 transitions. [2021-11-25 19:27:44,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 19:27:44,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3804 transitions. [2021-11-25 19:27:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 19:27:44,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:44,963 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-11-25 19:27:45,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:27:45,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:45,175 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:45,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1156749469, now seen corresponding path program 1 times [2021-11-25 19:27:45,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:45,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42993677] [2021-11-25 19:27:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:45,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 19:27:45,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:45,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42993677] [2021-11-25 19:27:45,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42993677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:27:45,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657115384] [2021-11-25 19:27:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:45,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:45,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:27:45,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:27:45,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:27:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:45,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:27:45,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:27:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:27:45,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:27:45,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657115384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:45,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:27:45,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 19:27:45,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868103701] [2021-11-25 19:27:45,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:45,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:45,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:45,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:45,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:27:45,555 INFO L87 Difference]: Start difference. First operand 2090 states and 3804 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:27:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:46,041 INFO L93 Difference]: Finished difference Result 2487 states and 4283 transitions. [2021-11-25 19:27:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:46,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2021-11-25 19:27:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:46,056 INFO L225 Difference]: With dead ends: 2487 [2021-11-25 19:27:46,056 INFO L226 Difference]: Without dead ends: 2193 [2021-11-25 19:27:46,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:27:46,059 INFO L933 BasicCegarLoop]: 3164 mSDtfsCounter, 42 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:46,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 6298 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:27:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-11-25 19:27:46,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2124. [2021-11-25 19:27:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 1984 states have (on average 1.8568548387096775) internal successors, (3684), 1991 states have internal predecessors, (3684), 82 states have call successors, (82), 57 states have call predecessors, (82), 56 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-25 19:27:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3846 transitions. [2021-11-25 19:27:46,153 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3846 transitions. Word has length 89 [2021-11-25 19:27:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:46,154 INFO L470 AbstractCegarLoop]: Abstraction has 2124 states and 3846 transitions. [2021-11-25 19:27:46,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-25 19:27:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3846 transitions. [2021-11-25 19:27:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 19:27:46,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:46,157 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-11-25 19:27:46,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:27:46,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:46,372 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1698677229, now seen corresponding path program 1 times [2021-11-25 19:27:46,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:46,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015790] [2021-11-25 19:27:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:46,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-25 19:27:46,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:46,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015790] [2021-11-25 19:27:46,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:46,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:46,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:27:46,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41473665] [2021-11-25 19:27:46,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:46,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:27:46,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:46,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:27:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:27:46,505 INFO L87 Difference]: Start difference. First operand 2124 states and 3846 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:27:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:47,243 INFO L93 Difference]: Finished difference Result 2868 states and 4744 transitions. [2021-11-25 19:27:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:27:47,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2021-11-25 19:27:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:47,265 INFO L225 Difference]: With dead ends: 2868 [2021-11-25 19:27:47,266 INFO L226 Difference]: Without dead ends: 2618 [2021-11-25 19:27:47,269 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:27:47,272 INFO L933 BasicCegarLoop]: 3195 mSDtfsCounter, 3404 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3404 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:47,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3404 Valid, 6353 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:27:47,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-11-25 19:27:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2422. [2021-11-25 19:27:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2196 states have (on average 1.7950819672131149) internal successors, (3942), 2202 states have internal predecessors, (3942), 133 states have call successors, (133), 92 states have call predecessors, (133), 91 states have return successors, (131), 128 states have call predecessors, (131), 131 states have call successors, (131) [2021-11-25 19:27:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 4206 transitions. [2021-11-25 19:27:47,425 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 4206 transitions. Word has length 90 [2021-11-25 19:27:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:47,426 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 4206 transitions. [2021-11-25 19:27:47,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:27:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 4206 transitions. [2021-11-25 19:27:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 19:27:47,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:47,430 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2021-11-25 19:27:47,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:27:47,431 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:47,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:47,431 INFO L85 PathProgramCache]: Analyzing trace with hash -760977800, now seen corresponding path program 1 times [2021-11-25 19:27:47,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:47,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799082223] [2021-11-25 19:27:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:47,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:27:47,468 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:27:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:27:47,581 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:27:47,581 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:27:47,582 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 19:27:47,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 19:27:47,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:27:47,593 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:27:47,598 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:27:47,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:27:47 BoogieIcfgContainer [2021-11-25 19:27:47,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:27:47,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:27:47,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:27:47,783 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:27:47,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:37" (3/4) ... [2021-11-25 19:27:47,786 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 19:27:47,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:27:47,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:27:47,929 INFO L158 Benchmark]: Toolchain (without parser) took 26453.96ms. Allocated memory was 107.0MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 66.3MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 582.2MB. Max. memory is 16.1GB. [2021-11-25 19:27:47,930 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 55.5MB in the beginning and 55.5MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:27:47,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4124.38ms. Allocated memory was 107.0MB in the beginning and 262.1MB in the end (delta: 155.2MB). Free memory was 66.3MB in the beginning and 154.6MB in the end (delta: -88.3MB). Peak memory consumption was 93.4MB. Max. memory is 16.1GB. [2021-11-25 19:27:47,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 582.18ms. Allocated memory is still 262.1MB. Free memory was 154.6MB in the beginning and 126.4MB in the end (delta: 28.2MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. [2021-11-25 19:27:47,932 INFO L158 Benchmark]: Boogie Preprocessor took 621.84ms. Allocated memory is still 262.1MB. Free memory was 126.4MB in the beginning and 93.6MB in the end (delta: 32.8MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2021-11-25 19:27:47,932 INFO L158 Benchmark]: RCFGBuilder took 10312.81ms. Allocated memory was 262.1MB in the beginning and 920.6MB in the end (delta: 658.5MB). Free memory was 93.6MB in the beginning and 699.8MB in the end (delta: -606.2MB). Peak memory consumption was 471.8MB. Max. memory is 16.1GB. [2021-11-25 19:27:47,933 INFO L158 Benchmark]: TraceAbstraction took 10653.66ms. Allocated memory was 920.6MB in the beginning and 1.8GB in the end (delta: 920.6MB). Free memory was 698.7MB in the beginning and 1.2GB in the end (delta: -532.7MB). Peak memory consumption was 386.9MB. Max. memory is 16.1GB. [2021-11-25 19:27:47,934 INFO L158 Benchmark]: Witness Printer took 146.57ms. Allocated memory is still 1.8GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:27:47,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 55.5MB in the beginning and 55.5MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4124.38ms. Allocated memory was 107.0MB in the beginning and 262.1MB in the end (delta: 155.2MB). Free memory was 66.3MB in the beginning and 154.6MB in the end (delta: -88.3MB). Peak memory consumption was 93.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 582.18ms. Allocated memory is still 262.1MB. Free memory was 154.6MB in the beginning and 126.4MB in the end (delta: 28.2MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 621.84ms. Allocated memory is still 262.1MB. Free memory was 126.4MB in the beginning and 93.6MB in the end (delta: 32.8MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. * RCFGBuilder took 10312.81ms. Allocated memory was 262.1MB in the beginning and 920.6MB in the end (delta: 658.5MB). Free memory was 93.6MB in the beginning and 699.8MB in the end (delta: -606.2MB). Peak memory consumption was 471.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10653.66ms. Allocated memory was 920.6MB in the beginning and 1.8GB in the end (delta: 920.6MB). Free memory was 698.7MB in the beginning and 1.2GB in the end (delta: -532.7MB). Peak memory consumption was 386.9MB. Max. memory is 16.1GB. * Witness Printer took 146.57ms. Allocated memory is still 1.8GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. 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: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int m_st ; [L11180] int t1_st ; [L11181] int m_i ; [L11182] int t1_i ; [L11183] int M_E = 2; [L11184] int T1_E = 2; [L11185] int E_M = 2; [L11186] int E_1 = 2; [L11190] int token ; [L11192] int local ; [L11651] COND FALSE !(__VERIFIER_nondet_int()) [L11654] CALL main2() [L11638] int __retres1 ; [L11642] CALL init_model() [L11553] m_i = 1 [L11554] t1_i = 1 [L11642] RET init_model() [L11643] CALL start_simulation() [L11579] int kernel_st ; [L11580] int tmp ; [L11581] int tmp___0 ; [L11585] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11586] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11587] CALL init_threads() [L11335] COND TRUE m_i == 1 [L11336] m_st = 0 [L11340] COND TRUE t1_i == 1 [L11341] t1_st = 0 [L11587] RET init_threads() [L11588] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11424] COND FALSE !(M_E == 0) [L11429] COND FALSE !(T1_E == 0) [L11434] COND FALSE !(E_M == 0) [L11439] COND FALSE !(E_1 == 0) [L11588] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11589] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11289] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11299] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11308] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11318] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11589] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11590] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11452] COND FALSE !(M_E == 1) [L11457] COND FALSE !(T1_E == 1) [L11462] COND FALSE !(E_M == 1) [L11467] COND FALSE !(E_1 == 1) [L11590] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11593] COND TRUE 1 [L11596] kernel_st = 1 [L11597] CALL eval() [L11371] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, 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] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE \read(tmp_ndt_2) [L11404] t1_st = 1 [L11405] CALL transmit1() [L11253] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET transmit1() [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, 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] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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] [L11208] COND TRUE 1 [L11211] token = __VERIFIER_nondet_int() [L11212] local = token [L11213] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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] [L11214] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11506] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11299] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11308] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11309] COND TRUE E_1 == 1 [L11310] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND TRUE \read(tmp___0) [L11493] t1_st = 0 [L11506] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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=0, token=0] [L11214] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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=0, tmp_var=0, token=0] [L11215] E_1 = 2 [L11216] m_pc = 1 [L11217] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, 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=0] [L11391] RET master() [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE \read(tmp_ndt_2) [L11404] t1_st = 1 [L11405] CALL transmit1() [L11253] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, 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=0] [L11256] COND TRUE t1_pc == 1 [L11272] token += 1 [L11273] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, 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=1] [L11274] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, 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=1] [L11506] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, 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=1] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, 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=1] [L11289] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, 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=1] [L11290] COND TRUE E_M == 1 [L11291] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, 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=1] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND TRUE \read(tmp) [L11485] m_st = 0 [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11308] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11309] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11318] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11506] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11274] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11275] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET transmit1() [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, token=1] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, token=1] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=-2, tmp_ndt_2=-3, token=1] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11200] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11222] COND FALSE !(token != local + 1) [L11227] COND TRUE tmp_var <= 5 [L11228] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11233] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11234] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11235] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11236] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] - UnprovableResult [Line: 11088]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1716 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 10.4s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17123 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17114 mSDsluCounter, 53590 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26929 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4201 IncrementalHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 28486 mSDtfsCounter, 4201 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2422occurred in iteration=9, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 436 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1124 NumberOfCodeBlocks, 1124 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1018 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1553 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 488/531 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! [2021-11-25 19:27:47,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c385ff4-2189-43af-aa10-fffaa3059121/bin/utaipan-eEHZpOm5b7/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