./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 904ada5b631ac9ba69e93f7c5eb51a71b3a5f4ed245a1ea57aa3fec5e9b98c37 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:54:59,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:54:59,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:54:59,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:54:59,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:54:59,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:54:59,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:54:59,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:54:59,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:54:59,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:54:59,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:54:59,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:54:59,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:54:59,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:54:59,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:54:59,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:54:59,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:54:59,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:54:59,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:54:59,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:54:59,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:54:59,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:54:59,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:54:59,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:54:59,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:54:59,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:54:59,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:54:59,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:54:59,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:54:59,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:54:59,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:54:59,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:54:59,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:54:59,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:54:59,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:54:59,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:54:59,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:54:59,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:54:59,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:54:59,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:54:59,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:54:59,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:55:00,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:55:00,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:55:00,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:55:00,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:55:00,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:55:00,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:55:00,010 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:55:00,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:55:00,010 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:55:00,010 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:55:00,010 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:55:00,010 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:55:00,011 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:55:00,011 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:55:00,011 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:55:00,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:55:00,011 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:55:00,011 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:55:00,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:55:00,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:55:00,013 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:55:00,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:55:00,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:55:00,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:55:00,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:55:00,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:55:00,013 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:55:00,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:55:00,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:55:00,013 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:55:00,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:55:00,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:55:00,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:55:00,014 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_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 904ada5b631ac9ba69e93f7c5eb51a71b3a5f4ed245a1ea57aa3fec5e9b98c37 [2022-12-14 08:55:00,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:55:00,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:55:00,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:55:00,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:55:00,196 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:55:00,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i [2022-12-14 08:55:02,870 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:55:03,032 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:55:03,032 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i [2022-12-14 08:55:03,036 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/data/5e220db10/153d7ee41be8401084bafc5b910fc4cd/FLAG9eab80016 [2022-12-14 08:55:03,046 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/data/5e220db10/153d7ee41be8401084bafc5b910fc4cd [2022-12-14 08:55:03,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:55:03,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:55:03,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:55:03,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:55:03,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:55:03,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3864c5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03, skipping insertion in model container [2022-12-14 08:55:03,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:55:03,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:55:03,163 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_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2022-12-14 08:55:03,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:55:03,186 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:55:03,195 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_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2022-12-14 08:55:03,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:55:03,214 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:55:03,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03 WrapperNode [2022-12-14 08:55:03,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:55:03,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:55:03,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:55:03,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:55:03,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,242 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 195 [2022-12-14 08:55:03,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:55:03,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:55:03,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:55:03,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:55:03,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:55:03,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:55:03,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:55:03,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:55:03,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (1/1) ... [2022-12-14 08:55:03,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:55:03,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:03,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:55:03,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:55:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:55:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:55:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:55:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:55:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:55:03,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:55:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:55:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:55:03,380 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:55:03,382 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:55:03,557 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:55:03,625 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:55:03,625 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-14 08:55:03,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:55:03 BoogieIcfgContainer [2022-12-14 08:55:03,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:55:03,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:55:03,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:55:03,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:55:03,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:55:03" (1/3) ... [2022-12-14 08:55:03,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309be46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:55:03, skipping insertion in model container [2022-12-14 08:55:03,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:55:03" (2/3) ... [2022-12-14 08:55:03,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309be46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:55:03, skipping insertion in model container [2022-12-14 08:55:03,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:55:03" (3/3) ... [2022-12-14 08:55:03,636 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-1.i [2022-12-14 08:55:03,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:55:03,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:55:03,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:55:03,699 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;@35140587, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:55:03,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:55:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:03,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 08:55:03,707 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:03,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:03,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:03,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1000355614, now seen corresponding path program 1 times [2022-12-14 08:55:03,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:03,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362759587] [2022-12-14 08:55:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:03,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:55:04,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:04,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362759587] [2022-12-14 08:55:04,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362759587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:55:04,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:55:04,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:55:04,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388273264] [2022-12-14 08:55:04,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:55:04,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:55:04,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:55:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:55:04,053 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:04,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:04,134 INFO L93 Difference]: Finished difference Result 33 states and 55 transitions. [2022-12-14 08:55:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:55:04,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-12-14 08:55:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:04,141 INFO L225 Difference]: With dead ends: 33 [2022-12-14 08:55:04,141 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 08:55:04,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:55:04,147 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:04,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 08:55:04,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 08:55:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2022-12-14 08:55:04,172 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 14 [2022-12-14 08:55:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:04,173 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2022-12-14 08:55:04,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2022-12-14 08:55:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 08:55:04,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:04,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:04,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:55:04,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:04,176 INFO L85 PathProgramCache]: Analyzing trace with hash -921133653, now seen corresponding path program 1 times [2022-12-14 08:55:04,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:04,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848627866] [2022-12-14 08:55:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:04,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:55:04,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:04,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848627866] [2022-12-14 08:55:04,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848627866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:04,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912165502] [2022-12-14 08:55:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:04,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:04,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:04,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:04,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:55:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:04,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:55:04,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 08:55:04,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:55:04,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912165502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:55:04,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:55:04,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-14 08:55:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491816137] [2022-12-14 08:55:04,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:55:04,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:55:04,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:55:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:55:04,439 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:04,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:04,494 INFO L93 Difference]: Finished difference Result 39 states and 66 transitions. [2022-12-14 08:55:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:55:04,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 08:55:04,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:04,495 INFO L225 Difference]: With dead ends: 39 [2022-12-14 08:55:04,495 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 08:55:04,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:55:04,497 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:04,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:55:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 08:55:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 08:55:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2022-12-14 08:55:04,503 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 15 [2022-12-14 08:55:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:04,503 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2022-12-14 08:55:04,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2022-12-14 08:55:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 08:55:04,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:04,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:04,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:55:04,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:04,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:04,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1513521095, now seen corresponding path program 1 times [2022-12-14 08:55:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:04,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714807743] [2022-12-14 08:55:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 08:55:04,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714807743] [2022-12-14 08:55:04,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714807743] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689832975] [2022-12-14 08:55:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:04,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:04,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:04,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:04,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:55:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:04,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:55:04,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 08:55:04,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 08:55:04,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689832975] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:04,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [330814448] [2022-12-14 08:55:04,969 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:55:04,969 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:55:04,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:55:04,977 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:55:04,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:55:05,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,648 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 08:55:05,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 08:55:05,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:05,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:06,404 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:55:06,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:55:06,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:06,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:06,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 08:55:07,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:07,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:07,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:07,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:07,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:07,207 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 08:55:07,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1020 treesize of output 1010 [2022-12-14 08:55:09,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,032 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:55:09,032 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:55:09,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,062 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:09,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,112 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:09,112 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:09,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,175 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,217 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:09,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:09,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,287 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:09,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:09,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,365 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,393 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:09,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:09,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,469 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:09,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:09,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,537 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,572 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:09,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,631 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:09,631 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:09,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,684 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,715 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,776 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:09,777 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:09,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,829 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,856 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:09,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:09,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,903 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:09,904 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:09,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:09,970 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:09,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:10,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,017 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:10,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:10,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:10,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,067 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:10,067 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:10,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,119 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:10,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:10,145 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:10,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:10,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,237 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:55:10,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:55:10,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,378 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:10,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:10,404 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:10,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:10,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,469 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:10,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:10,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:10,526 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:10,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:10,543 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:55:10,873 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '415#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:55:10,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:55:10,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:55:10,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 08:55:10,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627703610] [2022-12-14 08:55:10,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:55:10,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:55:10,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:10,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:55:10,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:55:10,876 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:10,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:10,933 INFO L93 Difference]: Finished difference Result 52 states and 74 transitions. [2022-12-14 08:55:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:55:10,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 [2022-12-14 08:55:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:10,934 INFO L225 Difference]: With dead ends: 52 [2022-12-14 08:55:10,934 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 08:55:10,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:55:10,935 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:10,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:55:10,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 08:55:10,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 08:55:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-12-14 08:55:10,939 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2022-12-14 08:55:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:10,939 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-12-14 08:55:10,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-12-14 08:55:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 08:55:10,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:10,940 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:10,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:55:11,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:11,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1724522658, now seen corresponding path program 2 times [2022-12-14 08:55:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:11,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270977967] [2022-12-14 08:55:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:11,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:55:11,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:11,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270977967] [2022-12-14 08:55:11,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270977967] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:11,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006519191] [2022-12-14 08:55:11,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:55:11,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:11,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:11,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:11,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:55:11,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 08:55:11,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:55:11,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:55:11,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:55:11,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:55:11,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006519191] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:11,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1709515147] [2022-12-14 08:55:11,391 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:55:11,391 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:55:11,391 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:55:11,391 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:55:11,391 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:55:11,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:11,938 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 08:55:11,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 08:55:12,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,761 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:55:12,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:55:12,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:12,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 08:55:13,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:13,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:13,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:13,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:13,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:13,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:13,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,339 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 08:55:13,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1040 treesize of output 1008 [2022-12-14 08:55:13,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,633 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:55:13,633 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:55:13,654 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:13,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:13,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,714 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:13,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:13,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,786 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:13,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:13,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,813 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:13,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:13,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:13,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,867 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:13,867 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:13,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,917 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:13,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:13,947 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:13,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:13,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:13,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,018 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:14,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:14,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,084 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,109 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:14,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,158 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:14,158 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:14,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,212 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,245 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:14,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:14,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,306 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:14,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:14,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,376 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,398 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:14,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,446 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:14,446 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:14,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,498 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,536 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:14,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,593 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:14,593 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:14,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,641 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,667 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:14,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,736 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:14,736 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:14,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,796 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:14,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:14,846 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:14,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:14,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:14,937 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:55:14,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:55:14,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:15,007 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:15,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:15,022 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:55:15,377 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '731#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:55:15,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:55:15,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:55:15,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 08:55:15,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148218687] [2022-12-14 08:55:15,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:55:15,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:55:15,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:55:15,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:55:15,379 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:15,470 INFO L93 Difference]: Finished difference Result 77 states and 122 transitions. [2022-12-14 08:55:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:55:15,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 27 [2022-12-14 08:55:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:15,471 INFO L225 Difference]: With dead ends: 77 [2022-12-14 08:55:15,471 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 08:55:15,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:55:15,472 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:15,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:15,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 08:55:15,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-14 08:55:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-12-14 08:55:15,478 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 27 [2022-12-14 08:55:15,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:15,478 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-12-14 08:55:15,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-12-14 08:55:15,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 08:55:15,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:15,479 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:15,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:55:15,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:15,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2087294174, now seen corresponding path program 3 times [2022-12-14 08:55:15,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:15,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136671240] [2022-12-14 08:55:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:15,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 08:55:15,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:15,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136671240] [2022-12-14 08:55:15,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136671240] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:15,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448968388] [2022-12-14 08:55:15,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:55:15,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:15,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:15,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:55:16,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:55:16,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:55:16,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:55:16,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 08:55:16,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 08:55:16,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448968388] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:16,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1587620360] [2022-12-14 08:55:16,111 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:55:16,111 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:55:16,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:55:16,112 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:55:16,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:55:16,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,714 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 08:55:16,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 08:55:16,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:16,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:17,520 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:55:17,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:55:17,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:17,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:17,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 08:55:18,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:18,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:18,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:18,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:18,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:18,147 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 08:55:18,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1020 treesize of output 1010 [2022-12-14 08:55:19,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:19,800 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:55:19,800 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:55:19,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:19,838 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:19,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:19,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:19,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:19,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:19,886 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:19,886 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:19,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:19,943 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:19,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:19,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:19,989 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:19,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,039 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:20,039 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:20,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,076 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,097 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:20,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,151 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:20,151 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:20,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,218 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,262 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:20,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,309 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:20,309 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:20,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,353 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,382 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:20,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,428 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:20,429 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:20,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,482 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,508 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:20,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,558 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:20,558 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:20,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,619 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,665 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,712 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:20,712 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:20,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,759 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,786 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:20,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,847 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:20,847 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:20,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,911 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:20,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:20,957 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:20,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:20,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:20,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:21,031 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:21,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:21,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:21,075 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:21,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:21,091 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:55:21,408 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1319#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:55:21,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:55:21,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:55:21,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-14 08:55:21,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061172815] [2022-12-14 08:55:21,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:55:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 08:55:21,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 08:55:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-12-14 08:55:21,409 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:21,456 INFO L93 Difference]: Finished difference Result 112 states and 137 transitions. [2022-12-14 08:55:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 08:55:21,456 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 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 54 [2022-12-14 08:55:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:21,456 INFO L225 Difference]: With dead ends: 112 [2022-12-14 08:55:21,456 INFO L226 Difference]: Without dead ends: 62 [2022-12-14 08:55:21,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-12-14 08:55:21,457 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:21,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:55:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-14 08:55:21,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-12-14 08:55:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-12-14 08:55:21,462 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 54 [2022-12-14 08:55:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:21,462 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-12-14 08:55:21,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:21,463 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-12-14 08:55:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 08:55:21,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:21,463 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:21,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:55:21,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:21,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash -522977662, now seen corresponding path program 4 times [2022-12-14 08:55:21,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:21,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842451360] [2022-12-14 08:55:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:21,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 08:55:21,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:21,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842451360] [2022-12-14 08:55:21,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842451360] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:21,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686952936] [2022-12-14 08:55:21,970 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 08:55:21,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:21,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:21,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:21,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:55:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:22,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 08:55:22,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 08:55:22,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 08:55:22,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686952936] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:22,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [158853562] [2022-12-14 08:55:22,245 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:55:22,245 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:55:22,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:55:22,245 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:55:22,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:55:22,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,905 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:55:22,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:55:22,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:22,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 76 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 67 [2022-12-14 08:55:23,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:23,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:23,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 08:55:23,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:23,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:23,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:23,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:23,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:23,595 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 08:55:23,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1020 treesize of output 1010 [2022-12-14 08:55:25,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,442 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:55:25,442 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:55:25,474 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:25,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:25,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,551 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:25,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:25,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,642 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:25,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:25,666 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:25,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:25,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,742 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:25,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:25,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,801 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:25,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:25,819 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:25,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:25,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,883 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:25,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:25,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,945 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:25,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:25,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:25,964 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:25,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:26,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,009 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:26,009 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:26,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,051 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:26,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,079 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:26,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,125 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:26,126 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:26,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,181 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:26,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,207 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:26,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:26,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,274 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:26,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:26,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,356 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:26,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,387 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:26,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,431 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:26,431 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:26,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,478 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:26,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,504 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:26,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:26,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,579 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:55:26,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:55:26,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,637 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:26,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,663 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:26,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:26,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,754 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:55:26,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:55:26,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:26,815 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:26,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:26,832 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:55:27,138 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2037#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:55:27,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:55:27,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:55:27,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-12-14 08:55:27,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814657414] [2022-12-14 08:55:27,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:55:27,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 08:55:27,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 08:55:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-12-14 08:55:27,141 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:27,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:27,203 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2022-12-14 08:55:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 08:55:27,203 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 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 60 [2022-12-14 08:55:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:27,204 INFO L225 Difference]: With dead ends: 124 [2022-12-14 08:55:27,204 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 08:55:27,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-12-14 08:55:27,206 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:27,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:27,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 08:55:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-12-14 08:55:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 73 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-12-14 08:55:27,214 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 60 [2022-12-14 08:55:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:27,215 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-12-14 08:55:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-12-14 08:55:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 08:55:27,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:27,216 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:27,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 08:55:27,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:27,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1102508734, now seen corresponding path program 5 times [2022-12-14 08:55:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:27,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712347260] [2022-12-14 08:55:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-14 08:55:28,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712347260] [2022-12-14 08:55:28,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712347260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126138840] [2022-12-14 08:55:28,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:55:28,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:28,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:28,099 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:28,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 08:55:28,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 08:55:28,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:55:28,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:55:28,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-12-14 08:55:28,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-12-14 08:55:28,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126138840] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:28,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1723023776] [2022-12-14 08:55:28,875 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:55:28,875 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:55:28,875 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:55:28,875 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:55:28,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:55:28,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:28,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,293 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 08:55:29,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 08:55:29,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:29,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:30,031 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:55:30,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:55:30,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:30,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 08:55:30,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:30,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:30,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:30,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:30,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:30,644 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 08:55:30,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1020 treesize of output 1010 [2022-12-14 08:55:32,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,372 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:55:32,372 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:55:32,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,408 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:32,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:32,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:32,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,473 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:32,473 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:32,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,550 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:32,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:32,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,603 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:32,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:32,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:32,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,664 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:32,665 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:32,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,715 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:32,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:32,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,742 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:32,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:32,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:32,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,780 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:32,780 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:32,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,848 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:32,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:32,884 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:32,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:32,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,946 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:32,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:32,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:32,998 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:32,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,021 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:33,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:33,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,083 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:33,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:33,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,132 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:33,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,155 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:33,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:33,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,201 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:33,201 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:33,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,273 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:33,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,331 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:33,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,393 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:33,394 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:33,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,436 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:33,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,460 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:33,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:33,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,534 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:33,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:33,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,598 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:33,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,619 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:33,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:33,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,659 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:33,659 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:33,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:33,711 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:33,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:33,735 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:55:34,205 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2885#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:55:34,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:55:34,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:55:34,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2022-12-14 08:55:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485617408] [2022-12-14 08:55:34,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:55:34,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 08:55:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 08:55:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 08:55:34,208 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:34,411 INFO L93 Difference]: Finished difference Result 179 states and 253 transitions. [2022-12-14 08:55:34,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 08:55:34,412 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 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 72 [2022-12-14 08:55:34,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:34,413 INFO L225 Difference]: With dead ends: 179 [2022-12-14 08:55:34,413 INFO L226 Difference]: Without dead ends: 129 [2022-12-14 08:55:34,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 08:55:34,414 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:34,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:55:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-14 08:55:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-12-14 08:55:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0859375) internal successors, (139), 128 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2022-12-14 08:55:34,425 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 72 [2022-12-14 08:55:34,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:34,425 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2022-12-14 08:55:34,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:34,425 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2022-12-14 08:55:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 08:55:34,427 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:34,427 INFO L195 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:34,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 08:55:34,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:34,629 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2071195637, now seen corresponding path program 6 times [2022-12-14 08:55:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:34,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327676180] [2022-12-14 08:55:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:34,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 08:55:35,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:35,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327676180] [2022-12-14 08:55:35,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327676180] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:35,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961596628] [2022-12-14 08:55:35,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:55:35,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:35,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:35,447 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:35,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:55:35,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:55:35,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:55:35,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 08:55:35,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 08:55:35,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 08:55:36,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961596628] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:36,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1233751946] [2022-12-14 08:55:36,215 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:55:36,215 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:55:36,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:55:36,215 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:55:36,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:55:36,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,810 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:55:36,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:55:36,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 76 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 67 [2022-12-14 08:55:36,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:36,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 08:55:37,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:37,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:37,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:37,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:37,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:37,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:37,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,360 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 08:55:37,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1040 treesize of output 1008 [2022-12-14 08:55:37,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,646 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:55:37,646 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:55:37,676 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:37,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:37,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,747 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:55:37,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:55:37,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,805 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:37,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:37,828 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:37,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:37,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,880 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:37,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:37,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,943 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:37,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:37,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:37,968 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:37,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:38,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,013 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:38,014 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:38,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,074 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,116 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:38,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,155 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:38,155 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:38,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,192 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,211 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:38,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:38,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,264 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:55:38,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:55:38,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,322 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,344 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:38,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,385 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:38,385 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:38,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,434 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,472 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:38,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,511 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:38,512 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:38,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,550 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,581 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:38,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,621 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:38,621 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:38,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,684 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,723 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:38,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,763 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:38,763 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:38,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:38,822 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:38,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:38,841 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:55:41,061 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4299#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:55:41,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:55:41,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:55:41,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-12-14 08:55:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497437832] [2022-12-14 08:55:41,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:55:41,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 08:55:41,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:41,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 08:55:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 08:55:41,064 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:41,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:41,176 INFO L93 Difference]: Finished difference Result 258 states and 302 transitions. [2022-12-14 08:55:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 08:55:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 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 127 [2022-12-14 08:55:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:41,177 INFO L225 Difference]: With dead ends: 258 [2022-12-14 08:55:41,177 INFO L226 Difference]: Without dead ends: 154 [2022-12-14 08:55:41,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 306 SyntacticMatches, 44 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 08:55:41,180 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:41,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-14 08:55:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-12-14 08:55:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.0718954248366013) internal successors, (164), 153 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2022-12-14 08:55:41,190 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 127 [2022-12-14 08:55:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:41,190 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2022-12-14 08:55:41,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2022-12-14 08:55:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-14 08:55:41,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:41,191 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:41,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 08:55:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:41,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash 670969826, now seen corresponding path program 7 times [2022-12-14 08:55:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:41,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602476228] [2022-12-14 08:55:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 08:55:43,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:43,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602476228] [2022-12-14 08:55:43,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602476228] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:43,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534409358] [2022-12-14 08:55:43,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 08:55:43,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:43,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:43,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:43,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 08:55:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:43,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 08:55:43,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 08:55:43,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 08:55:45,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534409358] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:45,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1136679332] [2022-12-14 08:55:45,440 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:55:45,440 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:55:45,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:55:45,441 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:55:45,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:55:45,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,925 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 08:55:45,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 08:55:45,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:45,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:46,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:46,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:46,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:46,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:46,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:46,544 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:55:46,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:55:46,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:46,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:46,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 08:55:47,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:47,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:47,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:47,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:47,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:47,135 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 08:55:47,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1020 treesize of output 1010 [2022-12-14 08:55:48,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:48,740 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:55:48,741 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:55:48,773 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:48,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:48,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:48,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:48,833 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:55:48,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:55:48,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:48,886 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:48,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:48,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:48,913 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:48,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:48,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:48,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:48,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:48,956 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:48,956 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:48,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,000 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,022 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:49,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:49,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,078 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:49,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:49,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,134 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,158 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:49,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,202 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:49,202 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:49,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,247 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,274 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:49,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:49,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,341 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:49,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:49,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,423 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,455 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:49,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:49,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,526 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:55:49,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:55:49,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,599 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,625 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:49,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,672 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:49,672 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:49,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,717 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,741 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:55:49,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:55:49,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,808 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:55:49,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:55:49,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,862 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,890 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:49,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:49,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:55:49,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:49,937 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:55:49,938 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:55:49,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:55:50,000 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:55:50,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:55:50,020 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:55:51,266 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6121#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:55:51,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:55:51,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:55:51,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2022-12-14 08:55:51,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098137845] [2022-12-14 08:55:51,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:55:51,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-12-14 08:55:51,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-12-14 08:55:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 08:55:51,270 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:51,406 INFO L93 Difference]: Finished difference Result 308 states and 377 transitions. [2022-12-14 08:55:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 08:55:51,406 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 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 152 [2022-12-14 08:55:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:51,407 INFO L225 Difference]: With dead ends: 308 [2022-12-14 08:55:51,407 INFO L226 Difference]: Without dead ends: 204 [2022-12-14 08:55:51,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 389 SyntacticMatches, 11 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2544 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 08:55:51,409 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:51,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-12-14 08:55:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-12-14 08:55:51,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0541871921182266) internal successors, (214), 203 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 214 transitions. [2022-12-14 08:55:51,416 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 214 transitions. Word has length 152 [2022-12-14 08:55:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:51,416 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 214 transitions. [2022-12-14 08:55:51,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 100 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:55:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 214 transitions. [2022-12-14 08:55:51,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-14 08:55:51,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:51,418 INFO L195 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:51,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 08:55:51,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 08:55:51,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:51,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2093227010, now seen corresponding path program 8 times [2022-12-14 08:55:51,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:51,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739196350] [2022-12-14 08:55:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:51,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-12-14 08:55:57,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:57,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739196350] [2022-12-14 08:55:57,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739196350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:57,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622528799] [2022-12-14 08:55:57,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:55:57,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:57,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:57,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:57,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 08:56:25,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 08:56:25,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:56:25,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 08:56:25,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:56:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5291 trivial. 0 not checked. [2022-12-14 08:56:25,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:56:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5346 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5291 trivial. 0 not checked. [2022-12-14 08:56:26,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622528799] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:56:26,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [643397703] [2022-12-14 08:56:26,377 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:56:26,377 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:56:26,377 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:56:26,377 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:56:26,377 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:56:26,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,092 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:56:27,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:56:27,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 76 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 67 [2022-12-14 08:56:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 08:56:27,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:27,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:27,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:27,751 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 08:56:27,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1040 treesize of output 1008 [2022-12-14 08:56:28,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,022 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:56:28,022 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:56:28,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,047 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:28,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,092 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:28,092 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:28,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,150 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,189 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:28,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,232 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:28,232 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:28,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,273 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,296 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:56:28,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:56:28,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,373 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:56:28,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:56:28,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,431 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,450 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:28,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,496 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:28,496 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:28,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,534 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,571 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:56:28,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:56:28,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,631 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:56:28,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:56:28,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,691 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,713 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:28,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,756 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:28,756 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:28,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,803 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,841 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:28,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,880 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:28,880 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:28,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,925 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:28,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:28,951 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:56:28,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:56:28,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:28,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:29,017 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:56:29,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:56:29,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:29,060 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:29,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:29,083 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:56:29,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:56:29,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:29,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:29,149 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:56:29,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:56:29,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:29,210 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:29,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:29,224 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:56:29,947 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8465#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:56:29,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:56:29,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:56:29,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2022-12-14 08:56:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473185438] [2022-12-14 08:56:29,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:56:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-12-14 08:56:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:56:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-12-14 08:56:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-12-14 08:56:29,951 INFO L87 Difference]: Start difference. First operand 204 states and 214 transitions. Second operand has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:56:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:56:30,430 INFO L93 Difference]: Finished difference Result 417 states and 545 transitions. [2022-12-14 08:56:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-12-14 08:56:30,430 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 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 202 [2022-12-14 08:56:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:56:30,432 INFO L225 Difference]: With dead ends: 417 [2022-12-14 08:56:30,432 INFO L226 Difference]: Without dead ends: 313 [2022-12-14 08:56:30,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-12-14 08:56:30,435 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:56:30,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:56:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-12-14 08:56:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-12-14 08:56:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.0352564102564104) internal successors, (323), 312 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:56:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 323 transitions. [2022-12-14 08:56:30,448 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 323 transitions. Word has length 202 [2022-12-14 08:56:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:56:30,448 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 323 transitions. [2022-12-14 08:56:30,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 123 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:56:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 323 transitions. [2022-12-14 08:56:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-12-14 08:56:30,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:56:30,451 INFO L195 NwaCegarLoop]: trace histogram [99, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:56:30,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 08:56:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 08:56:30,653 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:56:30,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:56:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1075915723, now seen corresponding path program 9 times [2022-12-14 08:56:30,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:56:30,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373710389] [2022-12-14 08:56:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:56:30,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:56:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:56:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 08:56:37,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:56:37,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373710389] [2022-12-14 08:56:37,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373710389] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:56:37,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660205677] [2022-12-14 08:56:37,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:56:37,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:56:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:56:37,849 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:56:37,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 08:56:38,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:56:38,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:56:38,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 3326 conjuncts, 101 conjunts are in the unsatisfiable core [2022-12-14 08:56:38,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:56:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 08:56:38,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:56:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7227 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 08:56:45,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660205677] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:56:45,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245275802] [2022-12-14 08:56:45,573 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:56:45,573 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:56:45,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:56:45,574 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:56:45,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:56:45,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:45,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,049 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 08:56:46,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 08:56:46,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,776 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:56:46,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:56:46,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:46,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 08:56:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:47,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:47,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:47,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:47,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:47,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:47,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,322 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 08:56:47,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1040 treesize of output 1008 [2022-12-14 08:56:47,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,606 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:56:47,606 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:56:47,631 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:56:47,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:56:47,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,694 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:56:47,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:56:47,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,742 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:47,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:47,761 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:56:47,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:56:47,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,823 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:56:47,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:56:47,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,886 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:47,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:47,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,911 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:47,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:47,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:47,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:47,949 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:47,949 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:47,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,004 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,041 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:48,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,081 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:48,081 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:48,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,120 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,141 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:48,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,179 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:48,179 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:48,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,219 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,239 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:48,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,283 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:48,284 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:48,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,347 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,386 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:48,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,446 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:48,446 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:48,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,482 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,505 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:56:48,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:56:48,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,563 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:56:48,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:56:48,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,652 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,675 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:56:48,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,717 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:56:48,717 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:56:48,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:56:48,770 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:56:48,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:56:48,790 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:56:56,392 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11979#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:56:56,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:56:56,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:56:56,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2022-12-14 08:56:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116555809] [2022-12-14 08:56:56,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:56:56,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-12-14 08:56:56,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:56:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-12-14 08:56:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-12-14 08:56:56,399 INFO L87 Difference]: Start difference. First operand 313 states and 323 transitions. Second operand has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:56:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:56:56,748 INFO L93 Difference]: Finished difference Result 626 states and 746 transitions. [2022-12-14 08:56:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-12-14 08:56:56,749 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 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 311 [2022-12-14 08:56:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:56:56,752 INFO L225 Difference]: With dead ends: 626 [2022-12-14 08:56:56,752 INFO L226 Difference]: Without dead ends: 414 [2022-12-14 08:56:56,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 757 SyntacticMatches, 69 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22596 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-12-14 08:56:56,754 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:56:56,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:56:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-14 08:56:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2022-12-14 08:56:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.026634382566586) internal successors, (424), 413 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:56:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 424 transitions. [2022-12-14 08:56:56,764 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 424 transitions. Word has length 311 [2022-12-14 08:56:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:56:56,764 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 424 transitions. [2022-12-14 08:56:56,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.1083743842364533) internal successors, (225), 202 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:56:56,765 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 424 transitions. [2022-12-14 08:56:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-12-14 08:56:56,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:56:56,768 INFO L195 NwaCegarLoop]: trace histogram [200, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:56:56,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 08:56:56,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 08:56:56,970 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:56:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:56:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash 51133794, now seen corresponding path program 10 times [2022-12-14 08:56:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:56:56,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439885066] [2022-12-14 08:56:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:56:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:56:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 08:57:21,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:57:21,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439885066] [2022-12-14 08:57:21,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439885066] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:57:21,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935374047] [2022-12-14 08:57:21,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 08:57:21,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:57:21,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:57:21,963 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:57:21,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 08:57:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:22,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 5043 conjuncts, 202 conjunts are in the unsatisfiable core [2022-12-14 08:57:22,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:57:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 08:57:23,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:57:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 22377 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 08:57:51,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935374047] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:57:51,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [627659898] [2022-12-14 08:57:51,011 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 08:57:51,011 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:57:51,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:57:51,011 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:57:51,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:57:51,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,456 INFO L321 Elim1Store]: treesize reduction 1189, result has 6.5 percent of original size [2022-12-14 08:57:51,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 21 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 98 [2022-12-14 08:57:51,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:51,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:52,105 INFO L321 Elim1Store]: treesize reduction 1620, result has 5.3 percent of original size [2022-12-14 08:57:52,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 23 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 279 treesize of output 325 [2022-12-14 08:57:52,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:52,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:52,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 24 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 08:57:52,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:52,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:52,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:52,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:52,688 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 08:57:52,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1020 treesize of output 1010 [2022-12-14 08:57:54,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,289 INFO L321 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-12-14 08:57:54,289 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-12-14 08:57:54,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,314 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:54,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:54,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:54,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,359 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:57:54,359 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:57:54,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,417 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:54,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:54,456 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:57:54,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:57:54,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,528 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:57:54,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:57:54,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,592 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:54,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:54,614 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:57:54,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:57:54,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,690 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:57:54,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:57:54,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,741 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:54,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:54,764 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:57:54,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:57:54,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,827 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 08:57:54,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 137 [2022-12-14 08:57:54,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,879 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:54,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:54,901 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:57:54,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:57:54,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:54,963 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:57:54,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:57:55,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,020 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:55,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:55,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,043 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:55,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:55,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:55,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,083 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:57:55,083 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:57:55,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,147 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:55,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:55,188 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 08:57:55,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 08:57:55,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,268 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 08:57:55,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 08:57:55,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,320 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:55,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:55,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,341 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:55,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:55,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:55,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,378 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:57:55,378 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:57:55,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,429 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:55,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:55,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,471 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:55,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:55,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:57:55,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,512 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 08:57:55,513 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 3 case distinctions, treesize of input 128 treesize of output 133 [2022-12-14 08:57:55,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:57:55,574 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 08:57:55,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 08:57:55,598 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:57:56,736 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16921#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem23#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start_main_#t~mem24#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a0~0#1.base|) (+ |ULTIMATE.start_main_~#a0~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start_main_~#a0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= (ite (= |ULTIMATE.start_main_#t~mem23#1| |ULTIMATE.start_main_#t~mem24#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a0~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:57:56,736 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:57:56,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:57:56,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2022-12-14 08:57:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749925407] [2022-12-14 08:57:56,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:57:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-12-14 08:57:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:57:56,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-12-14 08:57:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-12-14 08:57:56,753 INFO L87 Difference]: Start difference. First operand 414 states and 424 transitions. Second operand has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:57:58,343 INFO L93 Difference]: Finished difference Result 828 states and 1049 transitions. [2022-12-14 08:57:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-12-14 08:57:58,344 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 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 412 [2022-12-14 08:57:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:57:58,345 INFO L225 Difference]: With dead ends: 828 [2022-12-14 08:57:58,345 INFO L226 Difference]: Without dead ends: 616 [2022-12-14 08:57:58,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1436 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-12-14 08:57:58,352 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:57:58,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:57:58,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-12-14 08:57:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2022-12-14 08:57:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.0178861788617886) internal successors, (626), 615 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 626 transitions. [2022-12-14 08:57:58,366 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 626 transitions. Word has length 412 [2022-12-14 08:57:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:57:58,366 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 626 transitions. [2022-12-14 08:57:58,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.054320987654321) internal successors, (427), 404 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:57:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 626 transitions. [2022-12-14 08:57:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-12-14 08:57:58,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:57:58,369 INFO L195 NwaCegarLoop]: trace histogram [402, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:57:58,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 08:57:58,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 08:57:58,571 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:57:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:57:58,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1987051774, now seen corresponding path program 11 times [2022-12-14 08:57:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:57:58,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830546632] [2022-12-14 08:57:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:58,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:57:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:59:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 83280 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 2277 trivial. 0 not checked. [2022-12-14 08:59:33,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:59:33,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830546632] [2022-12-14 08:59:33,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830546632] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:59:33,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388858060] [2022-12-14 08:59:33,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:59:33,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:59:33,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:59:33,590 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:59:33,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bff5fb-613c-49ca-aa66-bdbb690c27e9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process