./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0 --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 da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:06:02,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:06:02,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:06:02,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:06:02,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:06:02,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:06:02,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:06:02,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:06:02,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:06:02,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:06:02,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:06:02,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:06:02,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:06:02,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:06:02,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:06:02,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:06:02,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:06:02,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:06:02,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:06:02,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:06:02,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:06:02,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:06:02,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:06:02,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:06:02,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:06:02,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:06:02,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:06:02,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:06:02,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:06:02,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:06:02,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:06:02,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:06:02,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:06:02,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:06:02,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:06:02,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:06:02,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:06:02,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:06:02,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:06:02,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:06:02,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:06:02,949 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:06:02,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:06:02,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:06:02,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:06:02,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:06:02,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:06:02,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:06:02,991 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:06:02,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:06:02,992 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:06:02,992 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:06:02,993 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:06:02,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:06:02,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:06:02,994 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:06:02,994 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:06:02,994 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:06:02,994 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:06:02,995 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:06:02,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:06:02,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:06:02,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:06:02,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:06:02,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:06:02,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:06:02,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:06:02,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:06:02,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:06:02,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:06:02,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:06:02,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:06:02,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:06:03,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:06:03,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:06:03,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:06:03,001 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:06:03,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:06:03,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:06:03,001 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:06:03,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:06:03,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:06:03,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:06:03,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da [2022-11-16 20:06:03,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:06:03,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:06:03,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:06:03,336 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:06:03,340 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:06:03,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2022-11-16 20:06:03,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/data/480c513c5/6990d4e46e674bdc87c0544b5db7952c/FLAG7a36b56a9 [2022-11-16 20:06:04,185 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:06:04,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2022-11-16 20:06:04,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/data/480c513c5/6990d4e46e674bdc87c0544b5db7952c/FLAG7a36b56a9 [2022-11-16 20:06:04,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/data/480c513c5/6990d4e46e674bdc87c0544b5db7952c [2022-11-16 20:06:04,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:06:04,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:06:04,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:06:04,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:06:04,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:06:04,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:06:04" (1/1) ... [2022-11-16 20:06:04,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7985b5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:04, skipping insertion in model container [2022-11-16 20:06:04,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:06:04" (1/1) ... [2022-11-16 20:06:04,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:06:04,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:06:04,624 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 20:06:05,207 WARN L229 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_57c5dec8-78ef-436c-9f63-ca42bea8e094/sv-benchmarks/c/ldv-races/race-2_4-container_of.i[75002,75015] [2022-11-16 20:06:05,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:06:05,252 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:06:05,266 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 20:06:05,294 WARN L229 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_57c5dec8-78ef-436c-9f63-ca42bea8e094/sv-benchmarks/c/ldv-races/race-2_4-container_of.i[75002,75015] [2022-11-16 20:06:05,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:06:05,403 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:06:05,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05 WrapperNode [2022-11-16 20:06:05,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:06:05,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:06:05,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:06:05,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:06:05,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,524 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 143 [2022-11-16 20:06:05,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:06:05,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:06:05,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:06:05,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:06:05,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:06:05,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:06:05,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:06:05,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:06:05,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (1/1) ... [2022-11-16 20:06:05,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:06:05,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:05,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:06:05,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 20:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 20:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 20:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:06:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:06:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:06:05,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:06:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-16 20:06:05,668 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-16 20:06:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:06:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:06:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:06:05,670 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 20:06:06,084 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:06:06,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:06:06,528 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:06:06,618 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:06:06,618 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 20:06:06,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:06:06 BoogieIcfgContainer [2022-11-16 20:06:06,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:06:06,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:06:06,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:06:06,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:06:06,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:06:04" (1/3) ... [2022-11-16 20:06:06,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbd0270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:06:06, skipping insertion in model container [2022-11-16 20:06:06,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:05" (2/3) ... [2022-11-16 20:06:06,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbd0270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:06:06, skipping insertion in model container [2022-11-16 20:06:06,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:06:06" (3/3) ... [2022-11-16 20:06:06,636 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2022-11-16 20:06:06,647 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 20:06:06,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:06:06,659 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 20:06:06,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 20:06:06,758 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 20:06:06,796 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 20:06:06,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 175 transitions, 366 flow [2022-11-16 20:06:06,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 175 transitions, 366 flow [2022-11-16 20:06:06,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 175 transitions, 366 flow [2022-11-16 20:06:06,909 INFO L130 PetriNetUnfolder]: 8/226 cut-off events. [2022-11-16 20:06:06,910 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 20:06:06,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 226 events. 8/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 427 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 122. Up to 4 conditions per place. [2022-11-16 20:06:06,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 3536 [2022-11-16 20:06:56,988 INFO L134 LiptonReduction]: Checked pairs total: 8875 [2022-11-16 20:06:56,989 INFO L136 LiptonReduction]: Total number of compositions: 179 [2022-11-16 20:06:56,997 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 41 transitions, 98 flow [2022-11-16 20:06:57,056 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 625 states, 613 states have (on average 2.6296900489396413) internal successors, (1612), 624 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:57,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:06:57,082 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@39bdcee8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:06:57,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 20:06:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 625 states, 613 states have (on average 2.6296900489396413) internal successors, (1612), 624 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:57,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:06:57,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:57,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:06:57,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 20:06:57,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash 20409970, now seen corresponding path program 1 times [2022-11-16 20:06:57,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:57,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829122384] [2022-11-16 20:06:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:57,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:57,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829122384] [2022-11-16 20:06:57,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829122384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:57,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:57,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:06:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619510581] [2022-11-16 20:06:57,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:06:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:06:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:57,596 INFO L87 Difference]: Start difference. First operand has 625 states, 613 states have (on average 2.6296900489396413) internal successors, (1612), 624 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:57,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:57,769 INFO L93 Difference]: Finished difference Result 618 states and 1568 transitions. [2022-11-16 20:06:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:06:57,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 20:06:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:57,792 INFO L225 Difference]: With dead ends: 618 [2022-11-16 20:06:57,794 INFO L226 Difference]: Without dead ends: 582 [2022-11-16 20:06:57,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:57,801 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:57,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:06:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-16 20:06:57,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2022-11-16 20:06:57,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 574 states have (on average 2.5644599303135887) internal successors, (1472), 581 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1472 transitions. [2022-11-16 20:06:57,904 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1472 transitions. Word has length 4 [2022-11-16 20:06:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:57,905 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 1472 transitions. [2022-11-16 20:06:57,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1472 transitions. [2022-11-16 20:06:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:06:57,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:57,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:06:57,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:06:57,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 20:06:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 20387362, now seen corresponding path program 1 times [2022-11-16 20:06:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:57,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454283284] [2022-11-16 20:06:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:58,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:58,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454283284] [2022-11-16 20:06:58,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454283284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:58,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:58,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:06:58,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957500534] [2022-11-16 20:06:58,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:06:58,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:58,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:06:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:58,382 INFO L87 Difference]: Start difference. First operand 582 states and 1472 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:58,561 INFO L93 Difference]: Finished difference Result 737 states and 1847 transitions. [2022-11-16 20:06:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:06:58,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 20:06:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:58,567 INFO L225 Difference]: With dead ends: 737 [2022-11-16 20:06:58,567 INFO L226 Difference]: Without dead ends: 737 [2022-11-16 20:06:58,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:58,569 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:58,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:06:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-16 20:06:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 641. [2022-11-16 20:06:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 634 states have (on average 2.5662460567823344) internal successors, (1627), 640 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1627 transitions. [2022-11-16 20:06:58,594 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1627 transitions. Word has length 4 [2022-11-16 20:06:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:58,594 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1627 transitions. [2022-11-16 20:06:58,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1627 transitions. [2022-11-16 20:06:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 20:06:58,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:58,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 20:06:58,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:06:58,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 20:06:58,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:58,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1882583178, now seen corresponding path program 1 times [2022-11-16 20:06:58,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:58,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269334923] [2022-11-16 20:06:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:58,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:58,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:58,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269334923] [2022-11-16 20:06:58,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269334923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:58,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:58,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:06:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427357545] [2022-11-16 20:06:58,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:58,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:06:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:58,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:06:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:06:58,883 INFO L87 Difference]: Start difference. First operand 641 states and 1627 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:59,180 INFO L93 Difference]: Finished difference Result 796 states and 1970 transitions. [2022-11-16 20:06:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:06:59,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 20:06:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:59,185 INFO L225 Difference]: With dead ends: 796 [2022-11-16 20:06:59,185 INFO L226 Difference]: Without dead ends: 711 [2022-11-16 20:06:59,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:06:59,186 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:59,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 12 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:06:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-11-16 20:06:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 679. [2022-11-16 20:06:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 673 states have (on average 2.5794947994056465) internal successors, (1736), 678 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1736 transitions. [2022-11-16 20:06:59,214 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1736 transitions. Word has length 6 [2022-11-16 20:06:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:59,216 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1736 transitions. [2022-11-16 20:06:59,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1736 transitions. [2022-11-16 20:06:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:06:59,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:59,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:59,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:06:59,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 20:06:59,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:59,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1492065287, now seen corresponding path program 1 times [2022-11-16 20:06:59,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:59,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704025190] [2022-11-16 20:06:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:59,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:59,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:59,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704025190] [2022-11-16 20:06:59,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704025190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:59,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:59,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:06:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870786769] [2022-11-16 20:06:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:59,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:06:59,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:06:59,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:59,464 INFO L87 Difference]: Start difference. First operand 679 states and 1736 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:59,604 INFO L93 Difference]: Finished difference Result 873 states and 2213 transitions. [2022-11-16 20:06:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:06:59,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 20:06:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:59,616 INFO L225 Difference]: With dead ends: 873 [2022-11-16 20:06:59,624 INFO L226 Difference]: Without dead ends: 873 [2022-11-16 20:06:59,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:59,626 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:59,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:06:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-11-16 20:06:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 739. [2022-11-16 20:06:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 733 states have (on average 2.581173260572988) internal successors, (1892), 738 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1892 transitions. [2022-11-16 20:06:59,659 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1892 transitions. Word has length 8 [2022-11-16 20:06:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:59,660 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1892 transitions. [2022-11-16 20:06:59,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:06:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1892 transitions. [2022-11-16 20:06:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 20:06:59,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:59,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:06:59,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:06:59,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 20:06:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:59,670 INFO L85 PathProgramCache]: Analyzing trace with hash 990616763, now seen corresponding path program 1 times [2022-11-16 20:06:59,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:06:59,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621270224] [2022-11-16 20:06:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:06:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:06:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:06:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:59,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:06:59,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621270224] [2022-11-16 20:06:59,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621270224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:06:59,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:06:59,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:06:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362927742] [2022-11-16 20:06:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:06:59,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:06:59,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:06:59,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:06:59,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:06:59,866 INFO L87 Difference]: Start difference. First operand 739 states and 1892 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:00,002 INFO L93 Difference]: Finished difference Result 901 states and 2285 transitions. [2022-11-16 20:07:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:07:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 20:07:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:00,007 INFO L225 Difference]: With dead ends: 901 [2022-11-16 20:07:00,008 INFO L226 Difference]: Without dead ends: 901 [2022-11-16 20:07:00,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:07:00,009 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:00,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:07:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-16 20:07:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 799. [2022-11-16 20:07:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 793 states have (on average 2.622950819672131) internal successors, (2080), 798 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 2080 transitions. [2022-11-16 20:07:00,036 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 2080 transitions. Word has length 9 [2022-11-16 20:07:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:00,036 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 2080 transitions. [2022-11-16 20:07:00,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:07:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 2080 transitions. [2022-11-16 20:07:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 20:07:00,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:00,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:00,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:07:00,039 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 20:07:00,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash -347998252, now seen corresponding path program 1 times [2022-11-16 20:07:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:00,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676784720] [2022-11-16 20:07:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:00,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:07:00,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:07:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:07:00,126 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:07:00,126 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:07:00,127 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-11-16 20:07:00,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-11-16 20:07:00,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-11-16 20:07:00,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-11-16 20:07:00,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-11-16 20:07:00,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-11-16 20:07:00,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-16 20:07:00,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-16 20:07:00,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:07:00,134 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 20:07:00,139 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 20:07:00,140 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:07:00,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:07:00 BasicIcfg [2022-11-16 20:07:00,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:07:00,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:07:00,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:07:00,173 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:07:00,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:06:06" (3/4) ... [2022-11-16 20:07:00,188 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 20:07:00,247 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 20:07:00,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:07:00,247 INFO L158 Benchmark]: Toolchain (without parser) took 55907.35ms. Allocated memory was 127.9MB in the beginning and 169.9MB in the end (delta: 41.9MB). Free memory was 83.5MB in the beginning and 53.9MB in the end (delta: 29.6MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2022-11-16 20:07:00,248 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:07:00,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1058.72ms. Allocated memory is still 127.9MB. Free memory was 83.4MB in the beginning and 59.1MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 20:07:00,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.50ms. Allocated memory is still 127.9MB. Free memory was 59.1MB in the beginning and 55.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 20:07:00,249 INFO L158 Benchmark]: Boogie Preprocessor took 46.02ms. Allocated memory is still 127.9MB. Free memory was 55.6MB in the beginning and 53.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:07:00,249 INFO L158 Benchmark]: RCFGBuilder took 1048.63ms. Allocated memory was 127.9MB in the beginning and 169.9MB in the end (delta: 41.9MB). Free memory was 53.0MB in the beginning and 127.2MB in the end (delta: -74.2MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2022-11-16 20:07:00,249 INFO L158 Benchmark]: TraceAbstraction took 53548.96ms. Allocated memory is still 169.9MB. Free memory was 126.1MB in the beginning and 59.1MB in the end (delta: 67.0MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. [2022-11-16 20:07:00,250 INFO L158 Benchmark]: Witness Printer took 73.97ms. Allocated memory is still 169.9MB. Free memory was 59.1MB in the beginning and 53.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 20:07:00,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1058.72ms. Allocated memory is still 127.9MB. Free memory was 83.4MB in the beginning and 59.1MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.50ms. Allocated memory is still 127.9MB. Free memory was 59.1MB in the beginning and 55.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.02ms. Allocated memory is still 127.9MB. Free memory was 55.6MB in the beginning and 53.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1048.63ms. Allocated memory was 127.9MB in the beginning and 169.9MB in the end (delta: 41.9MB). Free memory was 53.0MB in the beginning and 127.2MB in the end (delta: -74.2MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 53548.96ms. Allocated memory is still 169.9MB. Free memory was 126.1MB in the beginning and 59.1MB in the end (delta: 67.0MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. * Witness Printer took 73.97ms. Allocated memory is still 169.9MB. Free memory was 59.1MB in the beginning and 53.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 50.2s, 175 PlacesBefore, 44 PlacesAfterwards, 175 TransitionsBefore, 41 TransitionsAfterwards, 3536 CoEnabledTransitionPairs, 7 FixpointIterations, 87 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 179 TotalNumberOfCompositions, 8875 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3957, independent: 3658, independent conditional: 0, independent unconditional: 3658, dependent: 221, dependent conditional: 0, dependent unconditional: 221, unknown: 78, unknown conditional: 0, unknown unconditional: 78] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2509, independent: 2438, independent conditional: 0, independent unconditional: 2438, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2509, independent: 2430, independent conditional: 0, independent unconditional: 2430, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 79, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , SemanticIndependenceRelation.Query Time [ms]: [ total: 36502, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 505, dependent conditional: 0, dependent unconditional: 505, unknown: 35969, unknown conditional: 0, unknown unconditional: 35969] ], Cache Queries: [ total: 3957, independent: 1220, independent conditional: 0, independent unconditional: 1220, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 2570, unknown conditional: 0, unknown unconditional: 2570] , Statistics on independence cache: Total cache size (in pairs): 165, Positive cache size: 139, Positive conditional cache size: 0, Positive unconditional cache size: 139, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 10, Unknown conditional cache size: 0, Unknown unconditional cache size: 10 - 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: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-1, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=0, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1723] 0 data->shared.a = 3 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1726] 0 data->shared.b = 3 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1729] EXPR 0 data->shared.a [L1729] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 185 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 53.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 50.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 431 IncrementalHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 26 mSDtfsCounter, 431 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=799occurred in iteration=5, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 364 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 20:07:00,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57c5dec8-78ef-436c-9f63-ca42bea8e094/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE