./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh --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 08a64b64599ceefef00723a17bd9cad66dbb7d4e6f08f1e5c61a19e368f8af19 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:42:14,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:42:14,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:42:14,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:42:14,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:42:14,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:42:14,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:42:14,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:42:14,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:42:14,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:42:14,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:42:14,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:42:14,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:42:14,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:42:14,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:42:14,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:42:14,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:42:14,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:42:14,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:42:14,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:42:14,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:42:14,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:42:14,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:42:14,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:42:14,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:42:14,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:42:14,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:42:14,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:42:14,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:42:14,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:42:14,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:42:14,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:42:14,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:42:14,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:42:14,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:42:14,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:42:14,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:42:14,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:42:14,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:42:14,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:42:14,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:42:14,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:42:14,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:42:14,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:42:14,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:42:14,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:42:14,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:42:14,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:42:14,957 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:42:14,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:42:14,958 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:42:14,958 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:42:14,958 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:42:14,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:42:14,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:42:14,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:42:14,959 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:42:14,959 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:42:14,959 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:42:14,959 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:42:14,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:42:14,960 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:42:14,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:42:14,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:42:14,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:42:14,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:42:14,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:42:14,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:42:14,962 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:42:14,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:42:14,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:42:14,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:42:14,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:42:14,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:42:14,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:42:14,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:42:14,963 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:42:14,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:42:14,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:42:14,964 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:42:14,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:42:14,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:42:14,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:42:14,964 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_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a64b64599ceefef00723a17bd9cad66dbb7d4e6f08f1e5c61a19e368f8af19 [2022-12-14 05:42:15,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:42:15,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:42:15,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:42:15,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:42:15,157 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:42:15,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i [2022-12-14 05:42:17,711 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:42:17,832 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:42:17,833 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i [2022-12-14 05:42:17,837 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/data/6d0e00044/109c422cf6df451e9fcd7af1ff8dd5b6/FLAGb8e1173e6 [2022-12-14 05:42:17,847 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/data/6d0e00044/109c422cf6df451e9fcd7af1ff8dd5b6 [2022-12-14 05:42:17,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:42:17,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:42:17,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:42:17,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:42:17,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:42:17,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:42:17" (1/1) ... [2022-12-14 05:42:17,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1c8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:17, skipping insertion in model container [2022-12-14 05:42:17,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:42:17" (1/1) ... [2022-12-14 05:42:17,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:42:17,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:42:17,971 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i[998,1011] [2022-12-14 05:42:17,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:42:17,996 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:42:18,008 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/sv-benchmarks/c/array-industry-pattern/array_ptr_single_elem_init-1.i[998,1011] [2022-12-14 05:42:18,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:42:18,027 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:42:18,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18 WrapperNode [2022-12-14 05:42:18,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:42:18,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:42:18,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:42:18,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:42:18,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,059 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2022-12-14 05:42:18,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:42:18,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:42:18,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:42:18,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:42:18,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,085 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:42:18,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:42:18,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:42:18,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:42:18,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (1/1) ... [2022-12-14 05:42:18,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:42:18,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:42:18,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:42:18,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:42:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:42:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:42:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:42:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:42:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:42:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:42:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:42:18,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:42:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:42:18,216 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:42:18,218 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:42:18,372 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:42:18,430 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:42:18,431 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 05:42:18,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:42:18 BoogieIcfgContainer [2022-12-14 05:42:18,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:42:18,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:42:18,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:42:18,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:42:18,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:42:17" (1/3) ... [2022-12-14 05:42:18,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbed6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:42:18, skipping insertion in model container [2022-12-14 05:42:18,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:18" (2/3) ... [2022-12-14 05:42:18,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbed6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:42:18, skipping insertion in model container [2022-12-14 05:42:18,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:42:18" (3/3) ... [2022-12-14 05:42:18,440 INFO L112 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init-1.i [2022-12-14 05:42:18,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:42:18,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:42:18,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:42:18,496 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;@6b92940a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:42:18,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:42:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:42:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:42:18,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:18,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:42:18,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1150624467, now seen corresponding path program 1 times [2022-12-14 05:42:18,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:42:18,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274798985] [2022-12-14 05:42:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:18,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:42:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:42:18,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:42:18,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274798985] [2022-12-14 05:42:18,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274798985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:42:18,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:42:18,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:42:18,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359301334] [2022-12-14 05:42:18,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:42:18,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:42:18,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:42:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:42:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:42:18,737 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:42:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:18,780 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2022-12-14 05:42:18,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:42:18,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 [2022-12-14 05:42:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:18,788 INFO L225 Difference]: With dead ends: 26 [2022-12-14 05:42:18,788 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 05:42:18,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:42:18,793 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:18,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:42:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 05:42:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2022-12-14 05:42:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:42:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-12-14 05:42:18,815 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2022-12-14 05:42:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:18,816 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-12-14 05:42:18,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:42:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2022-12-14 05:42:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 05:42:18,816 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:18,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:42:18,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1163706679, now seen corresponding path program 1 times [2022-12-14 05:42:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:42:18,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369797966] [2022-12-14 05:42:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:42:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:42:18,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:42:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369797966] [2022-12-14 05:42:18,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369797966] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:42:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324459110] [2022-12-14 05:42:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:18,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:42:18,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:42:18,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:42:18,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:42:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:18,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:42:19,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:42:19,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:42:19,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324459110] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:19,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [75995553] [2022-12-14 05:42:19,072 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:42:19,072 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:42:19,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:42:19,080 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:42:19,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:42:19,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:42:19,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:42:19,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,450 INFO L321 Elim1Store]: treesize reduction 72, result has 6.5 percent of original size [2022-12-14 05:42:19,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 289 treesize of output 317 [2022-12-14 05:42:19,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-12-14 05:42:19,583 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:42:19,800 INFO L321 Elim1Store]: treesize reduction 258, result has 9.2 percent of original size [2022-12-14 05:42:19,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 443 treesize of output 475 [2022-12-14 05:42:19,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:19,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2022-12-14 05:42:20,704 INFO L321 Elim1Store]: treesize reduction 578, result has 9.7 percent of original size [2022-12-14 05:42:20,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 678 treesize of output 767 [2022-12-14 05:42:20,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:20,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 297 [2022-12-14 05:42:20,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 05:42:20,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 05:42:20,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-12-14 05:42:21,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:42:21,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:42:21,274 INFO L321 Elim1Store]: treesize reduction 262, result has 9.7 percent of original size [2022-12-14 05:42:21,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 888 treesize of output 1795 [2022-12-14 05:42:21,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 737 treesize of output 721 [2022-12-14 05:42:21,428 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:42:21,448 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:42:22,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 05:42:25,902 INFO L321 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2022-12-14 05:42:25,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 28393 treesize of output 28414 [2022-12-14 05:42:43,764 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 74 DAG size of output: 40 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:42:43,765 INFO L321 Elim1Store]: treesize reduction 155, result has 28.9 percent of original size [2022-12-14 05:42:43,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 10 new quantified variables, introduced 17 case distinctions, treesize of input 28046 treesize of output 28736 [2022-12-14 05:43:06,212 WARN L233 SmtUtils]: Spent 20.07s on a formula simplification. DAG size of input: 31 DAG size of output: 9 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:43:06,212 INFO L321 Elim1Store]: treesize reduction 69, result has 11.5 percent of original size [2022-12-14 05:43:06,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 27985 treesize of output 28326 [2022-12-14 05:43:10,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:43:10,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:43:10,977 INFO L217 Elim1Store]: Index analysis took 160 ms [2022-12-14 05:43:10,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 1214 [2022-12-14 05:43:54,704 WARN L233 SmtUtils]: Spent 38.29s on a formula simplification. DAG size of input: 38 DAG size of output: 11 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:43:54,704 INFO L321 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2022-12-14 05:43:54,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 116842 treesize of output 116863 [2022-12-14 05:46:16,376 WARN L233 SmtUtils]: Spent 2.04m on a formula simplification. DAG size of input: 75 DAG size of output: 41 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:46:16,377 INFO L321 Elim1Store]: treesize reduction 155, result has 28.9 percent of original size [2022-12-14 05:46:16,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 10 new quantified variables, introduced 17 case distinctions, treesize of input 116428 treesize of output 117143 [2022-12-14 05:46:40,064 WARN L233 SmtUtils]: Spent 20.10s on a formula simplification. DAG size of input: 33 DAG size of output: 9 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:46:40,064 INFO L321 Elim1Store]: treesize reduction 69, result has 11.5 percent of original size [2022-12-14 05:46:40,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 116367 treesize of output 116705 [2022-12-14 05:46:49,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:49,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:49,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:49,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:49,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:49,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 409 [2022-12-14 05:46:49,876 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:46:55,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:55,058 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:46:55,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:55,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 11 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1412 treesize of output 4706 [2022-12-14 05:46:55,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:55,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:55,809 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:46:55,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:46:55,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:46:55,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 11 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1419 treesize of output 4711 [2022-12-14 05:47:01,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:01,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:01,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-12-14 05:47:01,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:47:01,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:01,314 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:01,480 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '103#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~s1~0#1.base| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |~#a~0.offset|))) (or (not (= |ULTIMATE.start_main_~s1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~s1~0#1.base| 0))) (= |ULTIMATE.start_main_~s1~0#1.offset| (select (select |#memory_$Pointer$.offset| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |~#a~0.offset|))) (= (select |#length| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|))) 8) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s1~0#1.base|) |ULTIMATE.start_main_~s1~0#1.offset|) |ULTIMATE.start_main_#t~mem11#1.offset|) (= (select (select |#memory_int| |ULTIMATE.start_main_~s1~0#1.base|) (+ |ULTIMATE.start_main_~s1~0#1.offset| 4)) 0) (not (= (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|)) 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|))) 1) (= (select (select |#memory_$Pointer$.offset| |~#a~0.base|) (+ 12 |~#a~0.offset|)) 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (or (not (= |ULTIMATE.start_main_#t~mem11#1.base| 0)) (not (= |ULTIMATE.start_main_#t~mem11#1.offset| 0))) 1 0)) (< (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|)) |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s1~0#1.base|) |ULTIMATE.start_main_~s1~0#1.offset|) |ULTIMATE.start_main_#t~mem11#1.base|))' at error location [2022-12-14 05:47:01,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:01,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:01,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 05:47:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222484406] [2022-12-14 05:47:01,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:01,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:47:01,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:47:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=57, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:47:01,483 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:01,649 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-12-14 05:47:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:47:01,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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 7 [2022-12-14 05:47:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:01,649 INFO L225 Difference]: With dead ends: 42 [2022-12-14 05:47:01,650 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 05:47:01,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=57, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:47:01,650 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:01,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:47:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 05:47:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 13. [2022-12-14 05:47:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-12-14 05:47:01,654 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-12-14 05:47:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:01,655 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-12-14 05:47:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-12-14 05:47:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 05:47:01,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:01,655 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:01,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:47:01,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 05:47:01,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:47:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash -146512851, now seen corresponding path program 2 times [2022-12-14 05:47:01,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:01,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395645148] [2022-12-14 05:47:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:01,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:02,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:02,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395645148] [2022-12-14 05:47:02,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395645148] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:02,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729150887] [2022-12-14 05:47:02,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:47:02,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:02,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:02,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:02,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:47:02,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:47:02,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:47:02,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:47:02,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:02,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:47:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:02,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729150887] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:47:02,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1910884949] [2022-12-14 05:47:02,377 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:47:02,377 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:47:02,377 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:47:02,377 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:47:02,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:47:02,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:47:02,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:47:02,745 INFO L321 Elim1Store]: treesize reduction 242, result has 14.8 percent of original size [2022-12-14 05:47:02,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 547 treesize of output 600 [2022-12-14 05:47:02,801 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:02,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:02,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:02,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 35 [2022-12-14 05:47:02,917 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-12-14 05:47:02,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 406 treesize of output 414 [2022-12-14 05:47:02,960 INFO L321 Elim1Store]: treesize reduction 43, result has 10.4 percent of original size [2022-12-14 05:47:02,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 395 treesize of output 396 [2022-12-14 05:47:03,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 26 [2022-12-14 05:47:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:03,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 05:47:03,133 INFO L321 Elim1Store]: treesize reduction 226, result has 7.8 percent of original size [2022-12-14 05:47:03,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 486 treesize of output 496 [2022-12-14 05:47:03,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 35 [2022-12-14 05:47:03,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-14 05:47:03,276 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-12-14 05:47:03,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 490 treesize of output 498 [2022-12-14 05:47:03,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:03,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-12-14 05:47:03,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:03,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 05:47:03,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:47:03,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-12-14 05:47:03,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:47:03,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:03,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:03,542 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:03,544 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:03,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:03,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:03,644 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-12-14 05:47:03,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 164 [2022-12-14 05:47:03,824 INFO L321 Elim1Store]: treesize reduction 161, result has 41.0 percent of original size [2022-12-14 05:47:03,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 357 treesize of output 452 [2022-12-14 05:47:03,858 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 05:47:03,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 173 [2022-12-14 05:47:03,907 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 05:47:03,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 70 [2022-12-14 05:47:03,936 INFO L321 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-12-14 05:47:03,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 73 [2022-12-14 05:47:03,981 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:47:03,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2022-12-14 05:47:04,017 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 05:47:04,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 69 [2022-12-14 05:47:04,147 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2022-12-14 05:47:04,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 77 [2022-12-14 05:47:04,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-14 05:47:04,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:04,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2022-12-14 05:47:04,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:04,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:04,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2022-12-14 05:47:04,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:04,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2022-12-14 05:47:04,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:04,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 70 [2022-12-14 05:47:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:04,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2022-12-14 05:47:04,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:04,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:04,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-12-14 05:47:04,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:47:04,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:04,487 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:04,739 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '246#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~s1~0#1.base| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |~#a~0.offset|))) (or (not (= |ULTIMATE.start_main_~s1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~s1~0#1.base| 0))) (= |ULTIMATE.start_main_~s1~0#1.offset| (select (select |#memory_$Pointer$.offset| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |~#a~0.offset|))) (= (select |#length| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|))) 8) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s1~0#1.base|) |ULTIMATE.start_main_~s1~0#1.offset|) |ULTIMATE.start_main_#t~mem11#1.offset|) (= (select (select |#memory_int| |ULTIMATE.start_main_~s1~0#1.base|) (+ |ULTIMATE.start_main_~s1~0#1.offset| 4)) 0) (not (= (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|)) 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|))) 1) (= (select (select |#memory_$Pointer$.offset| |~#a~0.base|) (+ 12 |~#a~0.offset|)) 0) (= 3 |~#a~0.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |~#a~0.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (or (not (= |ULTIMATE.start_main_#t~mem11#1.base| 0)) (not (= |ULTIMATE.start_main_#t~mem11#1.offset| 0))) 1 0)) (< (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|)) |#StackHeapBarrier|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s1~0#1.base|) |ULTIMATE.start_main_~s1~0#1.offset|) |ULTIMATE.start_main_#t~mem11#1.base|))' at error location [2022-12-14 05:47:04,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:04,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:04,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-14 05:47:04,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638271047] [2022-12-14 05:47:04,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:04,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 05:47:04,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 05:47:04,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=166, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:47:04,741 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:05,038 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2022-12-14 05:47:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:47:05,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 05:47:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:05,039 INFO L225 Difference]: With dead ends: 90 [2022-12-14 05:47:05,039 INFO L226 Difference]: Without dead ends: 83 [2022-12-14 05:47:05,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=166, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:47:05,040 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 105 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:05,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 60 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:47:05,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-14 05:47:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 19. [2022-12-14 05:47:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-12-14 05:47:05,045 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2022-12-14 05:47:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:05,046 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-12-14 05:47:05,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-12-14 05:47:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 05:47:05,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:05,047 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:05,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:47:05,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:05,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:47:05,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:05,250 INFO L85 PathProgramCache]: Analyzing trace with hash -329048403, now seen corresponding path program 3 times [2022-12-14 05:47:05,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:05,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920300128] [2022-12-14 05:47:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:05,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:05,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:05,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920300128] [2022-12-14 05:47:05,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920300128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:05,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610137997] [2022-12-14 05:47:05,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:47:05,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:05,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:05,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:47:05,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:47:05,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:47:05,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 05:47:05,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:05,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:47:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:06,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610137997] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:47:06,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1208293256] [2022-12-14 05:47:06,082 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:47:06,082 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:47:06,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:47:06,083 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:47:06,083 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:47:06,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:47:06,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:47:06,409 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-12-14 05:47:06,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-12-14 05:47:06,425 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:06,432 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:06,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 35 [2022-12-14 05:47:06,590 INFO L321 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2022-12-14 05:47:06,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 519 treesize of output 540 [2022-12-14 05:47:07,504 INFO L321 Elim1Store]: treesize reduction 138, result has 30.7 percent of original size [2022-12-14 05:47:07,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 690 treesize of output 1198 [2022-12-14 05:47:07,841 INFO L321 Elim1Store]: treesize reduction 69, result has 11.5 percent of original size [2022-12-14 05:47:07,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 609 treesize of output 936 [2022-12-14 05:47:08,018 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:08,032 WARN L193 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:08,661 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-12-14 05:47:08,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 15522 treesize of output 15530 [2022-12-14 05:47:08,996 INFO L321 Elim1Store]: treesize reduction 38, result has 11.6 percent of original size [2022-12-14 05:47:08,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 15516 treesize of output 15522 [2022-12-14 05:47:09,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 21 [2022-12-14 05:47:09,892 INFO L321 Elim1Store]: treesize reduction 196, result has 8.8 percent of original size [2022-12-14 05:47:09,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 15554 treesize of output 15559 [2022-12-14 05:47:10,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2022-12-14 05:47:10,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-12-14 05:47:10,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 05:47:10,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:10,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:10,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-12-14 05:47:10,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:47:10,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:47:10,289 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:10,291 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:10,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:10,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:10,376 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-12-14 05:47:10,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 164 [2022-12-14 05:47:10,517 INFO L321 Elim1Store]: treesize reduction 161, result has 41.0 percent of original size [2022-12-14 05:47:10,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 357 treesize of output 452 [2022-12-14 05:47:10,550 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 05:47:10,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 173 [2022-12-14 05:47:10,598 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:47:10,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2022-12-14 05:47:10,619 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 05:47:10,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 69 [2022-12-14 05:47:10,655 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 05:47:10,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 70 [2022-12-14 05:47:10,683 INFO L321 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-12-14 05:47:10,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 73 [2022-12-14 05:47:10,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:10,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:10,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 48 [2022-12-14 05:47:10,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-14 05:47:10,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:10,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:10,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 116 [2022-12-14 05:47:10,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:10,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 73 [2022-12-14 05:47:10,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:10,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:10,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 48 [2022-12-14 05:47:10,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-14 05:47:11,034 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2022-12-14 05:47:11,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 83 [2022-12-14 05:47:11,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-14 05:47:11,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:11,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2022-12-14 05:47:11,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:11,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:11,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 111 [2022-12-14 05:47:11,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:11,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2022-12-14 05:47:11,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:11,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 22 [2022-12-14 05:47:11,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:11,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:47:11,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-12-14 05:47:11,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:11,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:11,399 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:11,613 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '510#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~s1~0#1.base| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |~#a~0.offset|))) (or (not (= |ULTIMATE.start_main_~s1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~s1~0#1.base| 0))) (= |ULTIMATE.start_main_~s1~0#1.offset| (select (select |#memory_$Pointer$.offset| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |~#a~0.offset|))) (= (select |#length| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|))) 8) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s1~0#1.base|) |ULTIMATE.start_main_~s1~0#1.offset|) |ULTIMATE.start_main_#t~mem11#1.offset|) (= (select (select |#memory_int| |ULTIMATE.start_main_~s1~0#1.base|) (+ |ULTIMATE.start_main_~s1~0#1.offset| 4)) 0) (not (= (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|)) 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|))) 1) (= (select (select |#memory_$Pointer$.offset| |~#a~0.base|) (+ 12 |~#a~0.offset|)) 0) (= 3 |~#a~0.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |~#a~0.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (or (not (= |ULTIMATE.start_main_#t~mem11#1.base| 0)) (not (= |ULTIMATE.start_main_#t~mem11#1.offset| 0))) 1 0)) (< (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|)) |#StackHeapBarrier|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s1~0#1.base|) |ULTIMATE.start_main_~s1~0#1.offset|) |ULTIMATE.start_main_#t~mem11#1.base|))' at error location [2022-12-14 05:47:11,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:11,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:11,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-12-14 05:47:11,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460953283] [2022-12-14 05:47:11,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:11,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 05:47:11,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 05:47:11,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=460, Unknown=0, NotChecked=0, Total=870 [2022-12-14 05:47:11,615 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:12,146 INFO L93 Difference]: Finished difference Result 186 states and 222 transitions. [2022-12-14 05:47:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 05:47:12,147 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 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 16 [2022-12-14 05:47:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:12,147 INFO L225 Difference]: With dead ends: 186 [2022-12-14 05:47:12,147 INFO L226 Difference]: Without dead ends: 179 [2022-12-14 05:47:12,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=410, Invalid=460, Unknown=0, NotChecked=0, Total=870 [2022-12-14 05:47:12,148 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 308 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:12,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 138 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 05:47:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-14 05:47:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 31. [2022-12-14 05:47:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-12-14 05:47:12,153 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 16 [2022-12-14 05:47:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:12,153 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-12-14 05:47:12,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-12-14 05:47:12,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 05:47:12,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:12,153 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:12,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:47:12,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:12,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:47:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2038887341, now seen corresponding path program 4 times [2022-12-14 05:47:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:12,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218994398] [2022-12-14 05:47:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:12,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:13,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:13,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218994398] [2022-12-14 05:47:13,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218994398] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:13,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544463868] [2022-12-14 05:47:13,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:47:13,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:13,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:13,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:13,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:47:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:13,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 05:47:13,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:13,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:47:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:14,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544463868] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:47:14,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [533021835] [2022-12-14 05:47:14,543 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:47:14,543 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:47:14,543 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:47:14,544 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:47:14,544 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:47:14,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:47:14,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 05:47:14,863 INFO L321 Elim1Store]: treesize reduction 242, result has 14.8 percent of original size [2022-12-14 05:47:14,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 547 treesize of output 600 [2022-12-14 05:47:14,906 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:14,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:14,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:14,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 35 [2022-12-14 05:47:15,034 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-12-14 05:47:15,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 406 treesize of output 414 [2022-12-14 05:47:15,070 INFO L321 Elim1Store]: treesize reduction 43, result has 10.4 percent of original size [2022-12-14 05:47:15,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 395 treesize of output 396 [2022-12-14 05:47:15,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 26 [2022-12-14 05:47:15,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:15,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 05:47:15,237 INFO L321 Elim1Store]: treesize reduction 226, result has 7.8 percent of original size [2022-12-14 05:47:15,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 441 treesize of output 451 [2022-12-14 05:47:15,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 35 [2022-12-14 05:47:15,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-14 05:47:15,361 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-12-14 05:47:15,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 445 treesize of output 453 [2022-12-14 05:47:15,391 INFO L321 Elim1Store]: treesize reduction 43, result has 10.4 percent of original size [2022-12-14 05:47:15,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 449 treesize of output 448 [2022-12-14 05:47:15,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 26 [2022-12-14 05:47:15,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:15,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 05:47:15,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 05:47:15,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-12-14 05:47:15,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 05:47:15,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:15,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:15,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:15,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:47:15,647 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:15,649 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:15,715 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-12-14 05:47:15,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 164 [2022-12-14 05:47:15,884 INFO L321 Elim1Store]: treesize reduction 161, result has 41.0 percent of original size [2022-12-14 05:47:15,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 357 treesize of output 447 [2022-12-14 05:47:15,920 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 05:47:15,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 173 [2022-12-14 05:47:15,974 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 05:47:15,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 70 [2022-12-14 05:47:16,001 INFO L321 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-12-14 05:47:16,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 73 [2022-12-14 05:47:16,040 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 05:47:16,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2022-12-14 05:47:16,078 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 05:47:16,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 69 [2022-12-14 05:47:16,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:16,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:16,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 433 treesize of output 424 [2022-12-14 05:47:16,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:47:16,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 391 treesize of output 376 [2022-12-14 05:47:16,276 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2022-12-14 05:47:16,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 88 [2022-12-14 05:47:16,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-14 05:47:16,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:47:16,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2022-12-14 05:47:16,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:47:16,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 80 [2022-12-14 05:47:16,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:16,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-12-14 05:47:16,382 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 05:47:16,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:16,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-12-14 05:47:16,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 05:47:16,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 05:47:16,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:47:16,679 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:16,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1014#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~s1~0#1.base| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |~#a~0.offset|))) (or (not (= |ULTIMATE.start_main_~s1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~s1~0#1.base| 0))) (= |ULTIMATE.start_main_~s1~0#1.offset| (select (select |#memory_$Pointer$.offset| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |~#a~0.offset|))) (= (select |#length| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|))) 8) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s1~0#1.base|) |ULTIMATE.start_main_~s1~0#1.offset|) |ULTIMATE.start_main_#t~mem11#1.offset|) (= (select (select |#memory_int| |ULTIMATE.start_main_~s1~0#1.base|) (+ |ULTIMATE.start_main_~s1~0#1.offset| 4)) 0) (not (= (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|)) 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|))) 1) (= (select (select |#memory_$Pointer$.offset| |~#a~0.base|) (+ 12 |~#a~0.offset|)) 0) (= 3 |~#a~0.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |~#a~0.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (or (not (= |ULTIMATE.start_main_#t~mem11#1.base| 0)) (not (= |ULTIMATE.start_main_#t~mem11#1.offset| 0))) 1 0)) (< (select (select |#memory_$Pointer$.base| |~#a~0.base|) (+ 12 |~#a~0.offset|)) |#StackHeapBarrier|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s1~0#1.base|) |ULTIMATE.start_main_~s1~0#1.offset|) |ULTIMATE.start_main_#t~mem11#1.base|))' at error location [2022-12-14 05:47:16,964 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:16,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:16,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-12-14 05:47:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653207173] [2022-12-14 05:47:16,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:16,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 05:47:16,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 05:47:16,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1382, Invalid=1480, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 05:47:16,966 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:18,355 INFO L93 Difference]: Finished difference Result 378 states and 450 transitions. [2022-12-14 05:47:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 05:47:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 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 28 [2022-12-14 05:47:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:18,358 INFO L225 Difference]: With dead ends: 378 [2022-12-14 05:47:18,359 INFO L226 Difference]: Without dead ends: 371 [2022-12-14 05:47:18,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1382, Invalid=1480, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 05:47:18,360 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1001 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:18,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 276 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 05:47:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-12-14 05:47:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 55. [2022-12-14 05:47:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2022-12-14 05:47:18,366 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 28 [2022-12-14 05:47:18,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:18,366 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2022-12-14 05:47:18,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:47:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2022-12-14 05:47:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 05:47:18,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:18,367 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1] [2022-12-14 05:47:18,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:47:18,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:18,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:47:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1295508051, now seen corresponding path program 5 times [2022-12-14 05:47:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:18,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965306297] [2022-12-14 05:47:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:47:21,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:21,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965306297] [2022-12-14 05:47:21,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965306297] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:21,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327618486] [2022-12-14 05:47:21,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:47:21,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:21,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:21,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:21,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5244f33-456e-41fb-b0ae-65923428613a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process