./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9 --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 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 --- 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-6b4ec56 [2022-11-20 20:15:22,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:15:22,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:15:22,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:15:22,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:15:22,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:15:22,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:15:22,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:15:22,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:15:22,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:15:22,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:15:22,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:15:22,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:15:22,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:15:22,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:15:22,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:15:22,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:15:22,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:15:22,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:15:22,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:15:22,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:15:22,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:15:22,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:15:22,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:15:22,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:15:22,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:15:22,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:15:22,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:15:22,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:15:22,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:15:22,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:15:22,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:15:22,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:15:22,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:15:22,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:15:22,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:15:22,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:15:22,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:15:22,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:15:22,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:15:22,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:15:23,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:15:23,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:15:23,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:15:23,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:15:23,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:15:23,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:15:23,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:15:23,045 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:15:23,045 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:15:23,045 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:15:23,046 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:15:23,047 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:15:23,047 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:15:23,047 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:15:23,047 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:15:23,047 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:15:23,048 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:15:23,048 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:15:23,048 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:15:23,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:15:23,049 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:15:23,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:15:23,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:15:23,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:15:23,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:15:23,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:15:23,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:15:23,051 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:15:23,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:15:23,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:15:23,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:15:23,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:15:23,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:15:23,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:15:23,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:15:23,052 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:15:23,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:15:23,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:15:23,053 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:15:23,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:15:23,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:15:23,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:15:23,054 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_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2022-11-20 20:15:23,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:15:23,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:15:23,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:15:23,381 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:15:23,381 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:15:23,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-11-20 20:15:26,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:15:26,630 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:15:26,631 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-11-20 20:15:26,641 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/data/7692bba65/80657c78d8be4c47a0353adcb9d02d6a/FLAG85b29cff4 [2022-11-20 20:15:26,662 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/data/7692bba65/80657c78d8be4c47a0353adcb9d02d6a [2022-11-20 20:15:26,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:15:26,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:15:26,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:15:26,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:15:26,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:15:26,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:15:26" (1/1) ... [2022-11-20 20:15:26,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4581daff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:26, skipping insertion in model container [2022-11-20 20:15:26,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:15:26" (1/1) ... [2022-11-20 20:15:26,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:15:26,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:15:26,925 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_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-11-20 20:15:27,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:15:27,015 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:15:27,035 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_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-11-20 20:15:27,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:15:27,090 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:15:27,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27 WrapperNode [2022-11-20 20:15:27,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:15:27,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:15:27,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:15:27,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:15:27,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,159 INFO L138 Inliner]: procedures = 42, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2022-11-20 20:15:27,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:15:27,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:15:27,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:15:27,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:15:27,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,208 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:15:27,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:15:27,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:15:27,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:15:27,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (1/1) ... [2022-11-20 20:15:27,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:15:27,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:27,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:15:27,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:15:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:15:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:15:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:15:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:15:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:15:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-20 20:15:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:15:27,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:15:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:15:27,412 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:15:27,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:15:27,696 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:15:27,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:15:27,781 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 20:15:27,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:15:27 BoogieIcfgContainer [2022-11-20 20:15:27,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:15:27,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:15:27,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:15:27,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:15:27,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:15:26" (1/3) ... [2022-11-20 20:15:27,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7971f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:15:27, skipping insertion in model container [2022-11-20 20:15:27,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:15:27" (2/3) ... [2022-11-20 20:15:27,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7971f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:15:27, skipping insertion in model container [2022-11-20 20:15:27,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:15:27" (3/3) ... [2022-11-20 20:15:27,805 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-11-20 20:15:27,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:15:27,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:15:27,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:15:27,900 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;@20c66240, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:15:27,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:15:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 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) [2022-11-20 20:15:27,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 20:15:27,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:27,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:27,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:27,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:27,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1869257227, now seen corresponding path program 1 times [2022-11-20 20:15:27,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:27,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525194856] [2022-11-20 20:15:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:27,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:28,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:28,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525194856] [2022-11-20 20:15:28,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525194856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:28,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:15:28,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:15:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373063579] [2022-11-20 20:15:28,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:28,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:15:28,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:15:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:15:28,330 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 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) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 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) [2022-11-20 20:15:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:28,413 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2022-11-20 20:15:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:15:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 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) Word has length 13 [2022-11-20 20:15:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:28,423 INFO L225 Difference]: With dead ends: 43 [2022-11-20 20:15:28,423 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 20:15:28,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:15:28,429 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:28,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:15:28,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 20:15:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 20:15:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-20 20:15:28,462 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2022-11-20 20:15:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:28,462 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-20 20:15:28,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 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) [2022-11-20 20:15:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-20 20:15:28,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 20:15:28,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:28,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:28,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:15:28,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2097630440, now seen corresponding path program 1 times [2022-11-20 20:15:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:28,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322305404] [2022-11-20 20:15:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:28,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:28,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322305404] [2022-11-20 20:15:28,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322305404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:15:28,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248140526] [2022-11-20 20:15:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:28,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:28,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:28,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:15:28,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:15:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:28,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:15:28,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:28,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:28,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248140526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:28,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1425090198] [2022-11-20 20:15:28,845 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-20 20:15:28,845 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:15:28,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:15:28,856 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:15:28,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:15:28,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:28,947 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 20:15:28,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-20 20:15:28,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:28,979 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:15:28,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-20 20:15:29,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:29,016 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 26 treesize of output 28 [2022-11-20 20:15:29,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:15:29,172 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-20 20:15:29,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 184 treesize of output 181 [2022-11-20 20:15:29,369 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 14 treesize of output 10 [2022-11-20 20:15:29,415 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 [2022-11-20 20:15:29,425 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 [2022-11-20 20:15:29,439 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 [2022-11-20 20:15:29,829 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:15:30,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1425090198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:30,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:15:30,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [3, 3, 3] total 13 [2022-11-20 20:15:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154255370] [2022-11-20 20:15:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:30,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:15:30,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:30,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:15:30,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:15:30,962 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:31,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:31,175 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-11-20 20:15:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:15:31,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 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 [2022-11-20 20:15:31,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:31,177 INFO L225 Difference]: With dead ends: 46 [2022-11-20 20:15:31,177 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 20:15:31,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:15:31,178 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:31,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 31 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:15:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 20:15:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-11-20 20:15:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-20 20:15:31,186 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2022-11-20 20:15:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:31,186 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-20 20:15:31,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-20 20:15:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:15:31,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:31,187 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:31,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:31,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:31,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:31,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1635510525, now seen corresponding path program 1 times [2022-11-20 20:15:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:31,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068802072] [2022-11-20 20:15:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:31,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:15:31,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:31,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068802072] [2022-11-20 20:15:31,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068802072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:15:31,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643732361] [2022-11-20 20:15:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:31,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:31,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:31,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:15:31,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:15:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:31,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:15:31,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:15:31,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:15:31,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643732361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:31,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [126721315] [2022-11-20 20:15:31,705 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 20:15:31,706 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:15:31,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:15:31,706 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:15:31,706 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:15:31,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:31,767 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 20:15:31,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-20 20:15:31,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:31,804 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:15:31,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-20 20:15:31,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:31,844 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 29 treesize of output 31 [2022-11-20 20:15:31,937 INFO L321 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2022-11-20 20:15:31,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 180 [2022-11-20 20:15:31,994 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 14 treesize of output 10 [2022-11-20 20:15:32,018 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 [2022-11-20 20:15:32,026 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 [2022-11-20 20:15:32,035 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 [2022-11-20 20:15:32,458 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:15:34,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [126721315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:34,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:15:34,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 21 [2022-11-20 20:15:34,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773949037] [2022-11-20 20:15:34,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:34,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 20:15:34,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 20:15:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:15:34,499 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:35,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:35,268 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-11-20 20:15:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 20:15:35,268 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 20:15:35,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:35,269 INFO L225 Difference]: With dead ends: 38 [2022-11-20 20:15:35,269 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 20:15:35,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2022-11-20 20:15:35,271 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 52 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:35,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 29 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:15:35,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 20:15:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-11-20 20:15:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-11-20 20:15:35,280 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2022-11-20 20:15:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:35,281 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-11-20 20:15:35,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-11-20 20:15:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 20:15:35,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:35,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:35,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:35,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:35,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash 304009, now seen corresponding path program 1 times [2022-11-20 20:15:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:35,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993609571] [2022-11-20 20:15:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:35,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:15:35,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:35,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993609571] [2022-11-20 20:15:35,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993609571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:15:35,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493659721] [2022-11-20 20:15:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:35,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:35,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:35,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:15:35,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:15:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:35,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:15:35,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:15:35,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:15:35,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493659721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:35,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [900268820] [2022-11-20 20:15:35,710 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 20:15:35,711 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:15:35,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:15:35,711 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:15:35,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:15:35,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:35,741 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:15:35,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-20 20:15:35,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:35,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-11-20 20:15:35,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:35,766 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 29 treesize of output 31 [2022-11-20 20:15:35,862 INFO L321 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2022-11-20 20:15:35,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 180 [2022-11-20 20:15:35,903 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 14 treesize of output 10 [2022-11-20 20:15:35,922 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 [2022-11-20 20:15:35,930 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 [2022-11-20 20:15:35,937 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 [2022-11-20 20:15:36,513 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:15:38,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [900268820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:38,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:15:38,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 21 [2022-11-20 20:15:38,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589055007] [2022-11-20 20:15:38,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:38,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 20:15:38,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 20:15:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:15:38,132 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:38,991 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2022-11-20 20:15:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 20:15:38,998 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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 22 [2022-11-20 20:15:38,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:38,999 INFO L225 Difference]: With dead ends: 47 [2022-11-20 20:15:38,999 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 20:15:39,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:15:39,001 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 55 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:39,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 36 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:15:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 20:15:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2022-11-20 20:15:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-11-20 20:15:39,018 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2022-11-20 20:15:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:39,018 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-11-20 20:15:39,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-11-20 20:15:39,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 20:15:39,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:39,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:39,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 20:15:39,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:39,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:39,220 INFO L85 PathProgramCache]: Analyzing trace with hash 316013492, now seen corresponding path program 1 times [2022-11-20 20:15:39,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:39,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550362327] [2022-11-20 20:15:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:39,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:15:39,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:39,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550362327] [2022-11-20 20:15:39,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550362327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:15:39,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641599236] [2022-11-20 20:15:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:39,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:39,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:15:39,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:15:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:39,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:15:39,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:15:39,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:39,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:15:39,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641599236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:39,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497770393] [2022-11-20 20:15:39,410 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 20:15:39,410 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:15:39,410 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:15:39,410 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:15:39,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:15:39,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:39,438 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 20:15:39,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-20 20:15:39,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:39,460 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:15:39,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-20 20:15:39,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:39,479 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 29 treesize of output 31 [2022-11-20 20:15:39,540 INFO L321 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2022-11-20 20:15:39,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 180 [2022-11-20 20:15:39,578 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 14 treesize of output 10 [2022-11-20 20:15:39,595 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 [2022-11-20 20:15:39,602 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 [2022-11-20 20:15:39,610 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 [2022-11-20 20:15:40,030 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:15:41,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [497770393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:41,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:15:41,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3, 3] total 20 [2022-11-20 20:15:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867247120] [2022-11-20 20:15:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 20:15:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 20:15:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:15:41,896 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:42,362 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-11-20 20:15:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:15:42,362 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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 22 [2022-11-20 20:15:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:42,363 INFO L225 Difference]: With dead ends: 53 [2022-11-20 20:15:42,363 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 20:15:42,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:15:42,365 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 61 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:42,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 41 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:15:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 20:15:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2022-11-20 20:15:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-11-20 20:15:42,378 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 22 [2022-11-20 20:15:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:42,379 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-11-20 20:15:42,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-11-20 20:15:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 20:15:42,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:42,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:42,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:42,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:42,586 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1020992384, now seen corresponding path program 1 times [2022-11-20 20:15:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:15:42,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446621784] [2022-11-20 20:15:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:42,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:15:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:15:42,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:15:42,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446621784] [2022-11-20 20:15:42,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446621784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:15:42,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930210222] [2022-11-20 20:15:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:42,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:42,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:42,706 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:15:42,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:15:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:42,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:15:42,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:15:42,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:15:42,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930210222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:42,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183433122] [2022-11-20 20:15:42,835 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 20:15:42,835 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:15:42,835 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:15:42,836 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:15:42,836 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:15:42,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:42,873 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 20:15:42,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-20 20:15:42,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:42,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-11-20 20:15:42,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:15:42,910 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 26 treesize of output 28 [2022-11-20 20:15:42,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:15:42,987 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-20 20:15:42,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 184 treesize of output 181 [2022-11-20 20:15:43,041 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 14 treesize of output 10 [2022-11-20 20:15:43,057 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 [2022-11-20 20:15:43,063 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 [2022-11-20 20:15:43,069 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 [2022-11-20 20:15:43,568 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:15:45,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [183433122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:45,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:15:45,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3, 3] total 20 [2022-11-20 20:15:45,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803496229] [2022-11-20 20:15:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:45,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 20:15:45,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 20:15:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:15:45,246 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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) [2022-11-20 20:15:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:45,607 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-11-20 20:15:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:15:45,607 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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) Word has length 24 [2022-11-20 20:15:45,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:45,608 INFO L225 Difference]: With dead ends: 40 [2022-11-20 20:15:45,608 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:15:45,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:15:45,609 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 40 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:45,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 22 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:15:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:15:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:15:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:15:45,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-11-20 20:15:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:45,611 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:15:45,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 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) [2022-11-20 20:15:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:15:45,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:15:45,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:15:45,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 20:15:45,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:15:45,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:15:47,127 INFO L902 garLoopResultBuilder]: At program point L85(lines 58 86) the Hoare annotation is: true [2022-11-20 20:15:47,127 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:15:47,127 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2022-11-20 20:15:47,127 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2022-11-20 20:15:47,128 INFO L895 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: (and (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-20 20:15:47,128 INFO L899 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2022-11-20 20:15:47,128 INFO L899 garLoopResultBuilder]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2022-11-20 20:15:47,128 INFO L899 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2022-11-20 20:15:47,129 INFO L895 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: (let ((.cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (.cse0 (<= 0 |ULTIMATE.start_main_~#A~0#1.base|)) (.cse1 (= |ULTIMATE.start_main_~#A~0#1.offset| 0)) (.cse3 (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0)) (.cse4 (<= 8 |ULTIMATE.start_main_~i~1#1|)) (.cse5 (= |#NULL.offset| 0)) (.cse6 (<= 0 |#StackHeapBarrier|)) (.cse7 (= |#NULL.base| 0))) (or (and (= 1 (select |#valid| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 8)) 0) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 0) .cse0 (< |#StackHeapBarrier| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.base| |ULTIMATE.start_main_~#A~0#1.base|) (= (+ |ULTIMATE.start_parse_expression_list_~i~0#1| 1) 0) (not (= |ULTIMATE.start_parse_expression_list_~str#1.base| 0)) .cse1 (= |ULTIMATE.start_parse_expression_list_~str#1.base| |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= .cse2 0) (= |ULTIMATE.start_main_~#A~0#1.offset| |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= 2 (select |#length| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|)) .cse3 .cse4 .cse5 .cse6 (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| |ULTIMATE.start_parse_expression_list_~str#1.offset|) .cse7) (and (let ((.cse9 (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (.cse8 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (and (< 0 .cse2) (= (select .cse8 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34)) (and (<= 0 .cse2) (not .cse9)) (let ((.cse10 (select .cse8 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse10)) (not (= 32 .cse10)) .cse9 (not (= 34 .cse10)))))) (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) .cse0 (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) .cse1 (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) .cse3 .cse4 .cse5 (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) .cse6 .cse7))) [2022-11-20 20:15:47,129 INFO L899 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2022-11-20 20:15:47,130 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-11-20 20:15:47,130 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1))) (and (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.base| |ULTIMATE.start_r_strncpy_#in~dest#1.base|) (= |ULTIMATE.start_r_strncpy_~src#1.offset| |ULTIMATE.start_r_strncpy_#in~src#1.offset|) (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (= (+ |ULTIMATE.start_r_strncpy_#in~n#1| |ULTIMATE.start_parse_expression_list_~start~0#1|) (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~j~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (< |ULTIMATE.start_parse_expression_list_~j~0#1| .cse0) 1 0)) (= |ULTIMATE.start_parse_expression_list_~str#1.base| |ULTIMATE.start_r_strncpy_#in~src#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|) |ULTIMATE.start_r_strncpy_#in~src#1.offset|) (= |ULTIMATE.start_r_strncpy_~n#1| |ULTIMATE.start_r_strncpy_#in~n#1|) (= |ULTIMATE.start_r_strncpy_~dest#1.offset| |ULTIMATE.start_r_strncpy_#in~dest#1.offset|) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (let ((.cse1 (select .cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse1)) (not (= 32 .cse1)) (not (= 34 .cse1)))) (not (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (= (select .cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34))) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| |ULTIMATE.start_r_strncpy_#in~dest#1.offset|) (= |ULTIMATE.start_r_strncpy_~dest#1.base| |ULTIMATE.start_r_strncpy_#in~dest#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_r_strncpy_#in~src#1.base| |ULTIMATE.start_r_strncpy_~src#1.base|) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (not (<= .cse0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (= |#NULL.base| 0))) [2022-11-20 20:15:47,131 INFO L895 garLoopResultBuilder]: At program point L73(lines 73 75) the Hoare annotation is: (and (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~j~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (let ((.cse1 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (let ((.cse0 (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse0)) (not (= 32 .cse0)) (not (= 34 .cse0)))) (not (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (= (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34))) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-20 20:15:47,131 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2022-11-20 20:15:47,131 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-11-20 20:15:47,131 INFO L895 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-20 20:15:47,132 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-11-20 20:15:47,132 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2022-11-20 20:15:47,132 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:15:47,132 INFO L899 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2022-11-20 20:15:47,132 INFO L895 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: (and (let ((.cse0 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (.cse2 (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (.cse1 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (and (< 0 .cse0) (= (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34)) (and (<= 0 .cse0) (not .cse2)) (let ((.cse3 (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse3)) (not (= 32 .cse3)) .cse2 (not (= 34 .cse3)))))) (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-20 20:15:47,133 INFO L899 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2022-11-20 20:15:47,136 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 20:15:47,138 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:15:47,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:15:47 BoogieIcfgContainer [2022-11-20 20:15:47,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:15:47,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:15:47,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:15:47,181 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:15:47,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:15:27" (3/4) ... [2022-11-20 20:15:47,184 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:15:47,192 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-11-20 20:15:47,193 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 20:15:47,193 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:15:47,193 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:15:47,213 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((str2 == dest && src == src) && str <= 0) && \old(n) + start == j + 1) && 0 <= str2) && 0 <= A) && start <= j) && \old(cond) == (if j < start + 1 then 1 else 0)) && str == src) && 0 <= str) && 0 <= str) && 0 <= str) && start + str == src) && n == \old(n)) && dest == dest) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || !(0 < j)) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && str2 == dest) && dest == dest) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && cond == \old(cond)) && #NULL == 0) && src == src) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && !(start + 1 <= j)) && #NULL == 0 [2022-11-20 20:15:47,228 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:15:47,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:15:47,229 INFO L158 Benchmark]: Toolchain (without parser) took 20556.60ms. Allocated memory was 182.5MB in the beginning and 333.4MB in the end (delta: 151.0MB). Free memory was 152.0MB in the beginning and 230.3MB in the end (delta: -78.3MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2022-11-20 20:15:47,229 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:15:47,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.22ms. Allocated memory is still 182.5MB. Free memory was 151.6MB in the beginning and 140.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:15:47,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.78ms. Allocated memory is still 182.5MB. Free memory was 140.0MB in the beginning and 137.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:15:47,230 INFO L158 Benchmark]: Boogie Preprocessor took 54.57ms. Allocated memory is still 182.5MB. Free memory was 137.9MB in the beginning and 136.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:15:47,230 INFO L158 Benchmark]: RCFGBuilder took 569.28ms. Allocated memory is still 182.5MB. Free memory was 136.4MB in the beginning and 115.9MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 20:15:47,231 INFO L158 Benchmark]: TraceAbstraction took 19391.26ms. Allocated memory was 182.5MB in the beginning and 333.4MB in the end (delta: 151.0MB). Free memory was 115.4MB in the beginning and 233.5MB in the end (delta: -118.1MB). Peak memory consumption was 160.7MB. Max. memory is 16.1GB. [2022-11-20 20:15:47,231 INFO L158 Benchmark]: Witness Printer took 49.05ms. Allocated memory is still 333.4MB. Free memory was 233.5MB in the beginning and 230.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:15:47,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.22ms. Allocated memory is still 182.5MB. Free memory was 151.6MB in the beginning and 140.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.78ms. Allocated memory is still 182.5MB. Free memory was 140.0MB in the beginning and 137.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.57ms. Allocated memory is still 182.5MB. Free memory was 137.9MB in the beginning and 136.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 569.28ms. Allocated memory is still 182.5MB. Free memory was 136.4MB in the beginning and 115.9MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 19391.26ms. Allocated memory was 182.5MB in the beginning and 333.4MB in the end (delta: 151.0MB). Free memory was 115.4MB in the beginning and 233.5MB in the end (delta: -118.1MB). Peak memory consumption was 160.7MB. Max. memory is 16.1GB. * Witness Printer took 49.05ms. Allocated memory is still 333.4MB. Free memory was 233.5MB in the beginning and 230.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 195 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 162 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 864 IncrementalHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 33 mSDtfsCounter, 864 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 224 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 23 NumberOfFragments, 619 HoareAnnotationTreeSize, 7 FomulaSimplifications, 73 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3634 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 685 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 48/63 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 3.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 89, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 157, TOOLS_POST_TIME: 3.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 157, TOOLS_QUANTIFIERELIM_TIME: 3.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 317, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 14, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 33, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 89, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 13, LOOP_SUMMARIZER_CACHE_MISSES: 13, LOOP_SUMMARIZER_OVERALL_TIME: 1.8s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.8s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 33, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1655, DAG_COMPRESSION_RETAINED_NODES: 256, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: (((((((((((((((str <= 0 && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= j + 1) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: ((((((((((((((((((1 == \valid[str2] && unknown-#memory_int-unknown[A][A + 8] == 0) && start == 0) && 0 <= A) && unknown-#StackHeapBarrier-unknown < str2) && str == A) && i + 1 == 0) && !(str == 0)) && A == 0) && str == str) && j + 1 == 0) && A == str) && 2 == unknown-#length-unknown[str2]) && str2 == 0) && 8 <= i) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && str == str) && #NULL == 0) || (((((((((((((((((((0 < j + 1 && unknown-#memory_int-unknown[str][j + str + 1] == 34) || (0 <= j + 1 && !(0 < j))) || (((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && 0 < j) && !(34 == unknown-#memory_int-unknown[str][j + str]))) && str <= 0) && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: ((((((((((((((((str <= 0 && 0 <= str2) && 0 <= A) && start <= j) && 0 <= str) && 0 <= str) && 0 <= str) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || !(0 < j)) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: ((((((((((((((((((0 < j + 1 && unknown-#memory_int-unknown[str][j + str + 1] == 34) || (0 <= j + 1 && !(0 < j))) || (((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && 0 < j) && !(34 == unknown-#memory_int-unknown[str][j + str]))) && str <= 0) && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((str2 == dest && src == src) && str <= 0) && \old(n) + start == j + 1) && 0 <= str2) && 0 <= A) && start <= j) && \old(cond) == (if j < start + 1 then 1 else 0)) && str == src) && 0 <= str) && 0 <= str) && 0 <= str) && start + str == src) && n == \old(n)) && dest == dest) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || !(0 < j)) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && str2 == dest) && dest == dest) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && cond == \old(cond)) && #NULL == 0) && src == src) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && !(start + 1 <= j)) && #NULL == 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: ((((0 <= i && 0 <= A) && A == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-20 20:15:47,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec9a07-af58-4b1f-98eb-79cfb88198f9/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE